Are you done with him or still friends? If you broke up with him, he is in his every right to hang out with whoever he wants to be. Guys think like point number 3 of Google's Philosophy...any other way just is not fun.
Fast is better than slow.
Google believes in instant gratification. You want answers and you want them right now. Who are we to argue?
You are not stupid to still love him after that. More accurately it is that you want the outcome to have been in your favor. It is rather hard to explain, but sadly it does suck to be in such an illusion-like area.
The choice is yours if you want to repair the already broken foundations, but sometimes you just have to bulldoze and start building a new one. It's painful, it's hard, but sometimes...there's no other way.
If you want my advice, get some goal outside of relationships and focus intensely on that for awhile. Allow it to be the main focus of your life. Physical hardship (as in manual labor or things that make you physically exhausted) are usually ones that can help flush out the exhaustion of your emotional and mind problems. Just remember to set some kind of direction to go in instead of just blindly raging...trust me when I say that it gets you nowhere fast.
Not putting on a condom is just as stupid as going 14 command center against an unscouted zerg player. Yeah he's PROBABLY putting down the economy first, but eventually you're going to get face stomped by a rush.