Most Helpful Girl
Some one please ring the bullshit bell.
Now, sweetie, if he loved you he wouldn't have even flirted seriously with other girls. That is the definition of love (in this circumstance). Part of love is respect- a big part. And by cheating on you- not once, not twice, but THREE TIMES he is showing you plain and clear that he does not respect you, or the terms of your relationship. And in a monogamous relationship love means committing yourself emotionally and physically to one person. If he so easily cheated on you, again, THREE TIMES and flirted with a dozen more girls (which is information you had to pull out of him, and he was hiding it, really says something about all that "changing" he did, doesn't it) that doesn't scream love to me.
If I were you, no matter how I felt about him or what he said I'd walk away. There's someone better out there, someone who deserves me. Do people deserve second chances? Can people change? Yes and yes. But it takes a lot of time, work and effort to change and I find that very few people can, and most of those that do, do it for someone else, to prove themselves or win that person back and that's not real change. Real change comes from within, comes from yourself FOR yourself.
If you can't just walk away then tell him you need a break to think things over and to get your head straight, and so does he. Break up- don't talk to him, text him, visit, call, Facebook, email, snail mail- NOTHING. Have no contact with him at all. At the end of the summer meet back up and talk over how things are and where you both stand. See how it goes, see if he really is changed. And if he's saying he has because he wants you and he did it for you then that's not real change, not at all. This is what my boyfriend and I needed to do after a rough two years in a needy, neglectful just awful relationship and we're back together now. We didn't talk for four months, and when we did again for the first time- we had fell out of love. But we were friends, we saw that we were each a whole new person, so we became closer and closer and... happened to end up back together.