Cheating Girls, Is it something I've done?

You should try asking other girls out. Meaning. If you only go after certain ones. Maybe you should ask out someone else with a different personality or look.

You are going after the wrong kinda girl! I know BIG duh! But There are girls out there that are against that. In my eyes, cheating is as low as you can get. I've never done it and never will. Just keep looking. Oh yea something that helps me is telling them straight out 'look it's over if you cheat on me even once!' It helps. Cause then they know you expect commitment and honesty. But you win some and lose some. Don't let it get you down.

You chose all the wrong ones for all the right reasons and sometimes that happens but this time let somebody come to you and give yourself a chance to adjust to who they really are and what they about.

Get rid of her definitely. Either that girl feels insecure with you or you're just the guy for sloppy seconds. Just don't stay with her, she obviously doesn't need you or else she would be with you and only you.

Not all girls cheat but the males accuse the females for cheating all the time, ask your friends to go from your girlfriend/s with the male she's meant to cheat with and then if it's true then tell the female nicely you don't want to be with her anymore.

I don't think it is anything you have done, but it sounds to me like you are jumping into relationships too quick instead of dating right away. Ask if you can have her number then try to get to know her better. If she seems like any of your ex cheaters get rid of her right away! :D

Maybe you're looking at the wrong people, pick a girl who seems more down to earth and real not one that shows off what she has but keeps it more to herself that way she less likely to cheat.

Not all girls cheat. You just have to go after a different type of girl, or screen your girls a little better before you go out with them.