answer:First and foremost, talk to your dad about all of these feelings. Be completely honest, and let him know you’re worried about betraying him. You haven’t really given much info as to why your mother might have left, but I do believe that people truly can change, and that it can be possible for them to slowly earn your trust back over a long time, if that’s what you decide to do. I would be very guarded emotionally though, and take very small steps if you do decide to move forward. I’m certain your mother didn’t leave because of your behavior, so you shouldn’t be worrying about that at all. Best wishes, it sounds like you’ve got an amazing father.