Why is it so hard to trust after being cheated on?

I been cheated on and manipulated by my first bf my freshman and sophomore year. I thought I was in love. Ever since then hints got worse. Jealousy to the extreme with everyone after him. For no reason..now I'm a freshman in college with a serious bf. He's amazing and has done nothing to make me not trust him. Its been a year. But why am I still so jealous and get these horrid thoughts? Why haven't they gone away and when will they leave? He doesn't deserve to deal with my insecurities as bad as they are. A heart he didn't break..please help.

2012-09-30T14:02:26Z

And he tells me I mean too much to him to let a dumb girl get in between us and says it's not a mistake to cheat, its a decision. He says he hopes it means a lot to me, and it does. But it's scary to hear that when I've heard it from the cheater before. I try forcing myself to trust him, cause he deserves it.

2012-09-30T14:02:27Z

And he tells me I mean too much to him to let a dumb girl get in between us and says it's not a mistake to cheat, its a decision. He says he hopes it means a lot to me, and it does. But it's scary to hear that when I've heard it from the cheater before. I try forcing myself to trust him, cause he deserves it.

Anonymous2012-09-27T03:16:44Z

It's really sad when we get cheated on, and you will have more relationships where your trust will be stretched, how you deal with it will guide your destiny, so don't make the same mistakes twice and resign yourself to the fact not everyone thinks like you and as for your new friend I hope he doesn't wear the same hat, it's not his fault!

Anonymous2012-09-27T03:10:29Z

Its like if a person mistreats an animal. Like if it was hit with a news paper, it might back away from newspapers no matter the person.

Quan2012-09-27T03:08:46Z

because your afraid of it happening again...and it might take some time to trust him!

Anonymous2012-09-27T03:09:01Z

Yes I'm