Caught boyfriend sending facebook messages to two different females on facebook. Please help!?

[Miranda]

In a nutshell, 2013 was a rough year for me. My parents moved across country, my car died, found out I have thyroid disorder, worked 6 days a week 12 hour shifts..was just tired, overwhelmed and didn't get to see my boyfriend much. Well, this past weekend, he left his phone on his end table. He was messaging his guy friend and I was close enough to see messages sent to two females. I couldn't help but grab his phone and the following is what I read: Hey, Hit me up to drink if u want. Ignore whatevr my facebook status shit says lol text me sometime if u want.
(the first one was october 26th
and november 10th was the second time he tried to talk to her) She never replied to him. He got mad, called me every name in the book and threw my purse out front on the ground. I left and haven't seen him since. He is now texting and calling telling me that he loves me and its not a big deal and the females were friends from 10 years ago and that he's sorry. I don't know what to do about him?!