Quoting forgive-n let*love:" Does the baby still wake up at night r.. When he says 'keeps me up' does that mean he goes to sleep at ... [snip!] ... My reply would've been- well maybe if my child could get some sleep before 2am she/he wouldn't be so cranky and keep waking up!"
Why does him going to bed so late make him a jackass?
Maybe he works night shift and this is the sleep schedule he's on? I don't go to bed until 6am, and don't wake up until 2-3pm. Not everyone should have to accommodate to a baby. When living in an apartment, that is one of the downsides. You have neighbors, all of who will be different and have different lifestyles, and you deal with it.