What kind of girl am I? I feel like I should be mad at my ex for treating me so badly but I'm not.?

So I met this boy last year, We fell for each other. For some reason he couldn't stay in a committed relationship, we were on and off and off and on. All I wanted was to keep on loving him and giving him everything he never got, he was treated badly in other relationships, his dad walked out when he was young, etc. Honestly, I don't think he should carry the past with him into the future like that, i mean if you have troubles talk it out ya know? Well, we stopped for a while, then he got up the courage to come back to me again, (he was always the one that broke up with me, never me breaking up with him) so i take him back, everything's incredible then he leaves AGAIN for some nasty girl. He breaks it off with her comes back but we don't get together,then he plays with my emotions trying to walk out of my life multiple times, then just recently he starts dating another nasty girl, really tares me up because we had been hanging out for weeks and he just leaves even though we aren't dating to have some girl who's going to break his heart soon. I never once got mad/angry/pissed at him, I always forgave him, I did cry but I never got revenge, i didn't just go off to date other guys, i waited :// What kind of girl am i? I loved him with all my heart, I feel so stupid for not getting angry I just couldnt get mad at him,ever. Now i'm looking for a new love because it's over between me and him. But am i stupid for dealing with this? Do i have a big heart? ahh :(( just need answers on what kind of girl I am...