Milfs (lesbian)

Okay so my dad has this new girlfriend and they have been seeing eachother for a few months now. Like 7-8 months . We just met and we have hung out like every day sense . And it just me and her and sometimes her two little kids too . But we always find our selves making sexual jokes and being funny . But see here's the thing , the age gap inbetween her and my dad is the same and between me and her . She is 30 my dad is 45 and I'm 17 . Her and him are sleeping together obviously. And I don't want to step inbetween that but I keep finding my self fantasizing about her. It's weird yes . And I wouldn't ever make a move . But I'm a tease and some parts of her show interest . She is bisexual and my dad knows . And my dad knows I am gay. And he doesn't see a problem with us hanging out so much. And neither do I cause nothing had happend . But just the other day she says this . " you could spend the night and sleep on the couch or in the girls bed sense they won't be home . I'd say you could sleep in my bed sense it's a king ..but that might not end to well..." I mean who says that 😳 help . I don't know what to think of his relationship and if I'm just seeing things . I need advice and just help .