I used to be the exact same way. You were angry, betrayed, even a little sad. You became hard, and your emotions didn't affect you anymore. I found a way out of this. I suppose I was lucky. I met the love of my life. He took my hand and led me away from the hurt and pain from my past. It took a long time for it to completely take affect, and let me to tell you right now, it emotionally gutted me like a fish. It hurts a lot. So much.... but I'm okay now. I can trust people now, and I don't move from guy to guy. Make sure its someone you trust with your life find them, or find me. I always help people. Now, I'm all okay now with the love of my life and engaged. I never thought it would happen to me. You deserve happiness. Now find it. Chase it.

I would say just watch what your doing. Everyone knows karma comes back to you, if the guy your seeing hasn't done anything to you why do you feel the hate towards him? I understand how you feel, I have been there as well. But you should really think about what you are doing to guys who have never hurt you before, they have feelings too. Just be careful with what you are doing, you may be treating the one for you like crap and not even notice.

I know how you are feeling. Ive become jaded over the years with men and relationships, but i still crave companionship, not relationships. What has helped me out alot is being single. After my last bad break up, i decided for myself that i needed to be single for a while(an indeterminate amount of time), and figure out me. what i wanted, what i needed, what i would and would not 'settle' for, what i liked about me, what i didnt like about me. I found that when in a relationship i was constantly focusing on the other person, which made me feel like crap(especially when they didnt focus on me in return), but now, still technically single, ive come to alot of self realizations, have alot of good guys who are FRIENDS(never have i once slept with them), and im happier than ever. I feel that if the 'right guy' comes along, ill know it and i will then be ready and willing to re join the 'relationship world', but as for now, im happy being single. My sex life hasnt perished, i have a guy friend or two that understand my situation, and when the feeling hits, i know who to call. That doesnt make me a whore or slut or whatever, not even a female player. It makes me a normal, healthy woman who fulfills her needs just like any man does. Just because there is a stigma against women who sleep with a man when they arent involved in a committed relationship with said man, doesnt mean its how everyone feels and how you should feel. Men do it all the time, and women are allowed to do it as well. Anyone who looks down on you for doing what you have to do to keep yourself healthy and happy sexually are either jealous of your sexual freedom or are stuck in the ice ages of religious zealot-ism(i know, not a word).
Women are now having relationships and sex like men. Its a giant leap for womenkind, and im proud of us for finally stepping out of the 'woman' role in relationships and finally going for what we want and actually getting it.
As for the cheating on whatever guy your in a relationship with, ive done it, but it made me feel worse than i ever imagined. Id say, break it off with the guy you are unhappy with and move on to the next guy after youve broken up. Cheating is never good, and when you finally do want to settle down with 'the perfect guy', he might not look too kindly on the fact that you are a 'reformed cheater' or have cheated in the past because he probably wont believe you when you say 'but id never cheat on you...'

I know how you feel...to a certain extent. I'm in a situation where I feel crazy amazing feelings for someone, they say they feel the same way...but I can't be with them for circumstances I'm not even going to get into right now because it's so messed up. But I find myself leading others on and/or hooking up with other chicks (I'm bi) just because. I won't date any of them, it's just the fact that I can get beautiful girls boosts my ego makes me forget about the pain I feel for just a little bit, it's terrible I know. I don't feel any loving feelings for them either, just friendly/sexual feelings.