Would a man's bad past always affect the future, For example, the bad boy's life style, games, breaking hearts and hurting a lot of people, having sex multiple partners that are not your girlfriends, and so on and then the guy wants to settle down with a nice girl that hasn't had a bad past and all, Would his past hunt their future like maybe not having children, or kids dying early or something bad even as the girl is innocent and the man would have changed? and vice versa.

definitely, wot goes around comes around, after all.