21 weeks pregnant me and baby father broke up, what do you think about the situation?

Okay so i basically lied about having a facebook account.. he didn't want me to have one.. i moved from NY to FL 3 years ago and that was my only way of staying in touch with old friends.. and he didn't quite like the idea of me having guy friends.. but i knew all the guy friends i had were pretty harmless.. at one point months back before i was even pregnant me and him broke up and i would get a little flirty on there with some guys but that was all.. me and him were broken up for about a month at the time so i felt we were really done that time and started talking to new guys which there were messages in my facebook of conversations i had with these guys.. but in the 2 1/2 years me and him had been together we have broken up and gotten back together quite a few times.. and the most i did in that time is flirt i never had sex with any other guy or kissed or even hung out with another male.. it went as far as flirting.. now i know i am in the wrong but he has done his fair share of damage to me in the past and i got over it.. he told me he is done with me and that he'll be there for his daughter and he will find someone who could offer him more than i have... how do you think you would have handled this situation in his shoes?? and should i be beating myself up about it?