Quoting hiljoys:" Should I really be offended? Because I feel really offended - but I've also been going through a few ... [snip!] ... I thought I was probably just over-reacting, but thought I'd throw the topic out here. Anyone else been called an ex's name?"
I have been there before so long as he is not saying it to you in insult and is genuinly sorry it was an accident kind of thing no reason to be mad as he didnt mean to and he still stands up for you when family makes the mistake
If its said maliciously tho yea I would be pissed