I need advice... Please

Alyssa • Happily married to my best friend.
So I was in a 4 year relationship. Engaged. We had issues. In May he kissed a girl and I gave him his ring back... And he said he loved me but wasn't sure if he was in love with me. And he always let curiosity take over. I was his first. And he wasn't mine. He never voiced it but I knew it was going to be a problem one day. And so we broke up in May. Because I was hurting and I just didn't understand. Here we are three months later. He's had sex with three other girls. Been on dates. Living alone for the first time in his life. I have been on dates, once I found out he was having sex... Even though I knew he was. I had sex with other people out of anger and it was stupid. That just made me miss him even more. We didn't talk for awhile. And then one day we started. He would sweet talk me. Tell me he missed me. That he still loved me... Thinks about me. And I never told him how I felt. I finally gave in And the last two weeks he's been talking to me, we've gone out a few times. I miss him. And I know he misses me, he said he made a mistake and is ready to start over and do things the right way this time... I'm scared. I moved all my stuff out in June and now I'm supposed to start over and move back in and trust him? I want too. I want my home back. I want him back. But how do I know once the " I miss you" phase is over, he won't ask me to leave again? What do I do? I know I'm in love with him. I know I love him. But if he knows that that gives him the power to tear me apart again. Do I risk it?