Help!!

My wife and me have been seperated for 5 months now she is trying to get back with me. But when we seperated she slept with one of the kids farthers. she says she would give up most of her rights to the child to be with me because he is a major reason we seperated. but im not okay with that either she will just resent me. im also trying to have a baby myself but i dont want her having any rights seeing as when we seperated she didnt let me see the kids. now she is offering me to them and stuff she just seems very back and forth and i dont think thats the type of person i need in my life i need help