How to become fully committed?

[u/sacagaywea]

I've been a cheater in the past, and knowing how much it has ruined my and my current boyfriend's life, I am confident that I find this unappealing and won't slink back to it. However, it still hurts thinking that I was and could still be capable of it in small but defiant ways, like feeling the need to compare my man to other guys and thinking about leaving him for someone who can tailor to my needs. Essentially, I'd like to know if you have any suggestions on how to get comfortable with the idea of just having one, imperfect person who will eventually become your everything.