Hi, i really need to sound off. My parents have been married for 32 years, my mum left my dad 8 months ago stating she couldn't be with him any more. My dad basically still adores her and would do anything for her, but i now know my mum is seeing another man. She went to his this weekend, and was there at new year but said it was a friends i have since discovered the friends name she gave is his daughter and i have found various photos of his son online that she has taken. She basically asked for my blessing to see this man which i told her just see how things go and not make it serious at this point and to not put it in peoples faces (she has been speaking/meeting this guy before she left my dad) I thought i would be ok with it but i really am not. My poor dad phoned me late last night and was saying he thought my mum would come back to him, when i knew she was with this guy all valentines weekend. It's breaking me. I feel angry and hurt, and in a way jealous that she is impressing his children but barely bothers with me and my family and treats my husband badly which has almost wrecked my own marriage at times. I just feel so confused and worried that my dad will find out me and my brother know and didn't tell him but i can't break his heart.
What would you do?