Couldn’t be me. I would cut contact with my father if he went through with it. F that. I refused to be labeled as a person who sleeps with their stepbrother. There only one exception and that’s if he struggled to pull himself back together after my moms death and she was there for him. If that’s the case I’d be the one to break up. You can find new love, it may just take time.
I wouldn’t want to be labelled that way but you only have one father I wouldn’t cut contact with him in my case I’d just break up like you said you can always find another love even tho this isn’t easy . I mean mariage isn’t everything they could just not get married lol but I just think that they all deserves happiness equally :)
I don’t think that he needs to break up. It will break two hearts (the mom’s and his) idk although it just shows how much he loves his son I wouldn’t say like I saw in other comments that I appreciate his decision. Can’t they just all be happy together? They all equally deserves love. They could all try to meet and talk about it and if they really can’t be together then that’s ok. Let’s see what happens.