What would you do?

My SO and I have been together for almost 2 years. March 3rd will be 2 years exactly.

I met him thru FB. We worked together but we didn't really know each other. Valentines night we both commented on a mutual friends post, it went from there. He claims he was drunk that night and didn't think anything of what he was doing.
We ended up texting for weeks, then dating. His age was never a problem for me. Personally I thought since he was way older than me I thought he would be more adult about a serious relationship.
FAST FORWARD months and months later: I became pregnant about 6 months into the relationship. Of course by then he was the first to say "I love you", which caused the relationship to escalate and go further.
Anyways to the point.
I got nosy one day when he left his phone in the room while he was in the shower. I saw texts from a woman. She sent him a picture of herself, it was a pretty innocent picture but it still bugged me. I deleted it. Few days after, he asked "Did you delete a picture from my phone?" I lied and said "No I don't know what you're talking about". I later admitted to it and he laughed it off saying I had no reason to be jealous because they were just friends, he was more friends with her husband but spoke to her on occasion and that the only reason he asked for her picture was to add it as her caller ID photo. I believed the husband thing but I thought bullsmurf on the caller ID photo thing because he already had one for her from her FB. I shrugged it off anyways. Months later I find messages from a lady he used to have a crush on, on his FB. He was telling her he had developed feelings for her that's why he had deleted her. She sent him back a winky face and said that was no reason to delete her. I was 4 months pregnant or so and majorly hormonal. I was pissed! We fought over that for a week. He finally blocked her.
FAST FORWARD months after pregnancy:
We're having problems. He barely paid attention to me, we were constantly arguing and he stopped being intimate with me in the bedroom at all. I felt useless, depressed and so alone, not to mention disgusting because he wouldn't even look at me. One night he fell asleep on the couch and left his 2 phones just laying on the floor. He had two because he was using a prepaid one when his normal one had gotten cut off. He had just turned the other one on again that day but still had the prepaid one. His prepaid one went off and the text said "Baby why aren't you answering my phone call, baby where are you?" I text it back saying "I think you have the wrong number" they said "No this is (SO's Name) right?" I was FURIOUS! I got his other phone and they had text him the same thing on the other also. I threw his phones at him and he woke up quick. I said "You're gonna be late for work, and by the way some bitch is calling you baby you might wanna explain that smurf!" He got up quick. He tried to kiss me and apologize saying it's nothing but I lost it. I cried and cried and didn't want him near me, I didn't know what to think. Was he cheating? Who was she? Was he seeing her on his lunch? He claimed he had never met her, that they just text each other because she lived out of town (She does because one of the text was "Remember I'm the girl from *blank", which wasn't even near our town). We got past that but it took forever. Then he let me play with his phone one night while he slept and I again got nosy and found more messages from ANOTHER girl on his FB. He was telling her how he wished he could go give her a back rub and take all her hurt away, and how he would kiss it all away. She was replying by telling him to go over and give her all those things. I got so upset, it was happening again but this time with a local girl. I messaged her telling her that I found their dirty secret. She messaged back "I can have your man if I want to, better watch what you say to me". I couldn't and feel like I still can't get past that. Even though he says it will never happen again and that he won't ever talk to another woman like that again it still bothers me. What would you ladies do? Should I have left a long time ago? Is there a way to keep the relationship and get over it? It still bothers me and I just hate that now he keeps his phone on lockdown and deletes everything now. ALL his text messages and FB messages get deleted. What are some opinions on what I should or should have done?

There has been another girl, but this was already long I decided to leave that one out.

GTFO.

Leave his ass, take the baby with you. That smurf will never end.

I would have left a long time ago. You deserve more than that.

I'm really sorry, that much hurt so much. I would not stay. Not a chance.

Leave him.
Sorry but you've stayed for way too long anyway.
I would have left after the first time, he's a cheater probably always will be.

He shows you no loyalty or respect... I'd say this one was a no-brainer. Leave. Go get yourself together and let him be single since he obviously wants that so badly.

I really hate to say it but he definitely isn't changing and doesn't seem like he wants to.. the only thing he's changing is how secretive he's being and that's in now way a good thing... it's time to GTFO cuz he is no good for you!

So how many times are you going to let him cheat on you? He thinks you're stupid and weak. He doesn't care if you catch him, you always stay. He's got the life.

Figure out your self worth and set higher standards.

You wouldn't fall for a guy like this, so why are you settling for one?

You need to move on from him. He's no good for you and is just going to keep hurting you.

I stay because I still love him so much. The latest thing is he keeps searching and searching for his Ex's FB profile. He doesn't know I blocked it from his profile so he continues to search for it. I just never thought my life would be having a baby with a man who pays so much attention to talking to other women he fails to see me slowly wasting away. I feel like I stay just waiting for it to happen again just so I can say "Alright this time was enough I'm leaving" but I never have the strength to. I feel so stupid.

yes, you should have left him a long time ago.

i can gaurantee he will never change, its not your hormones-he is an ass. a cheating ass with intentions that have nothing to do with you.

let that bitch think she has him, and understand that you never fully will....get away from that situation.

Sounds like he's a really flirty guy and is never gonna stop no matter how many times you catch him or he says sorry and especially with him deleting everything an having his phone in lockdown that would make me think he's back to his flirty ways ...it suck but I don't think I would stay after all those second and third chances he has gotten  

Wow!!! I'd leave him. What a dog! He did you wrong numerous times. This may come off a little harsh but Im not trying to be. In the way it sounds, it sounds like he's lost interest in the relationship. Fool me once shame on you, fool me twice shame on me KWIM? It doesnt sound like he wants to stop. If he was serious about you and your LO he wouldve put a stop to it the 1st time. Do you and your LO a favor and find somebody who wants you and only you

its hard to say but sounds to me like his not planning on stopping and they get smart trust me my hubby just started deleting everything so you would never know or have a clue even if he was doing something
although they do get lazy at a point and forget to delete again he wasnt cheating though

id say wait it out but seriously if ou find anything ever again and if his doing something wrong trust me you will find it sooner or later then id say leave
not worth the whole fight , im sorry itll never happen again thing thats just MO .

Quoting BG Secrets:" I stay because I still love him so much. The latest thing is he keeps searching and searching for his ... [snip!] ... happen again just so I can say "Alright this time was enough I'm leaving" but I never have the strength to. I feel so stupid."

omg trust me its not love, leave please and you will see. you will feel free.
you have the strength, stop holding yourself back.

i wonder how you have the strenght to stay, through all that pain-knowing he will never change.

dont doubt that he wont, because he WILL NOT change.