Most Helpful Guy
Ask if you guys can fix the problem together. Ask him if he still loves you or he moved on. Good Luck.
Most Helpful Girl
If he was able to break up with you that easily, clearly you two are on the wrong page. It's true you should want to better yourself for yourself, and if someone is helping you along the way then kudos to you however, if he broke up with you that easily, maybe its something that he was thinking about but never really wanted to do. Also if he's willing to jump back in the dating pool that easily and hang out with other females you don't really know, then it just proves how he feels.