I m a women so of course i m going to tell you "you didn't know what you had until you lost it"
when a man cheats, he causes so much hurt, pain, bad feelings.....
how long has your separation been?
Do you believe that you can love her and be faithful?
Being a women i would want a guy to send me flowers saying i love you.
you have to be on your best behavior, you have to give her a reason to go come back to you.
yall have a child together, so that is a way to see her and talk to her. don't pressure her.
did you tell her how much you love her. if your really desperate..get on your knees and cry. she probably dont trust you and that is something you have to build.