Hey, I also just made a profile to ask a question so I am new as well. To answer your question I myself was a habitual cheater. I was extremely young during those times (teen years) and although I was in love, after a period of time I became unfaithful. I wasn't looking for anything serious with the people I cheated with and one person I cheated on I was with for years off and on. I was attracted to the people I cheated with but always told them upfront how I wasn't leaving my relationship but they always caught feelings and I did occasionally as well.
Going back to the one that I know didn't deserve it... First time we dated we were both really young but I am a year older and 2 grades above so my interest obviously made my ex head over heels and believed that I could do no wrong. I used that to my advantage and cheated from the very beginning but ended up heartbroken after I was left for someone else. She knew my ex was in a relationship and still decided to begin a relationship. I know the nerve of me. Then that same girl was left for me. Ironic isn't it. I vowed to remain faithful because I finally had the one who had my heart. I was a mess during our break up. Well a year later I was back to my old ways until I broke up with my ex due to being accused of cheating. I was, just not with the person that I was accused of dealing with.
Well I made a promise to my ex and myself that I would be faithful to whomever I dated after the fact and we remained flirty friends until I met my husband who objected to our friendship. I've been faithful to my husband since I met him 3 years ago. Don't get me wrong it crossed my mind a few times (more out of spite) but I wouldn't act on it or put myself in a situation as that. I think my promise had more to do with the fact that I didn't ever want to hurt someone as badly as i did my ex. I also know how it feels. So cheaters can change it all depends on how badly you want to. I spent a lot of time on my own reflecting on my wrongs and being comfortable by myself before meeting my husband. I can say it helped a lot!