I need advice.... SUPER LONG STORY...?

Last friday, I was at a party. I was really drunk and I was on the phone with my boyfriend. We were arguing and I got pissed off and told him that I was dumping him. I hung up and went and had with a random guy. Right after I started banging this dude, I realized how stupid it was, and called my boyfriend back, crying, and apologizing. The next day we hung out and talked about it and he was really hurt. He's had girlfriends in the past cheat on him and he'd never given them another chance. We were in love though, and I had never done anything like this, and I swore to him that I am giving up partying and drinking because the relationship with him is much more important to me than that stuff..... NOW... a week later.... out of no where... My boyfriend texts me and says he isn't coming over (He lives an hour and a half away). I ask him why.... and he says that he loves me, but not as much as he used to, and the drive isn't worth his time anymore... He then tells me that last night he got some girl's phone number. He didn't call her or text her, but he said it made him question our relationship. I have been crying all day because I love this man and I want to be with him.... I never have cheated until then and I would never do it again. I hurt so bad because of all this drama and I just want to be with him and have him hold me and say things will get back to normal soon...... If you were my boyfriend, would you take me back?? What should I do?