Terrible night I need to vent.

The situation: Girl I've been crushing on for about five months (I know I need to move on) breaks up with her boyfriend of about 5 months. I had backed off out of respect but now with them broken up, all bets were off. Meet up with her at a party, dance with her all night. I'm obviously into her, she was what I thought, obviously into me. So I was like great, I'm going to kiss her next time I get a chance, she says "I'll be right back" so I say thats fine so me and couple buddies just chill for a couple minutes, when I see her and her ex boyfriend leaving together. Eff him because he's a douche bag, Eff her for going to back to him. Any man that makes a women cry isn't a man at all. Eff this whole situtation. God Bless