Family member, in on off relationship several years. Has a DC with ex (not involved but pays maintenance). He is separated, has older kids. Lots of drama in relationship and red flags - buying her expensive gifts at the start. Later on, stonewalling, disappearing and blocking her on social media . They have broken up several times and got back together.
She then found out he'd cheated (met a woman online and had sex with her various times), lied about having a partner, the woman told her about this months later, there's been lots of lies and drama. A lot was said but she never cut contact, instead she was demanding answers from him, had long conversations. But said she could never trust him again or get back together with him. One month later they get back together, he's in counselling, totally changed apparently. Takes her for romantic holiday, lots of happy photos. And now they're looking for a house together. She currently rents her home from the council, he has a bought house and is going to buy the new place as well.
It's all happening very fast and with the speed they got back together and all forgiven it's rather worrying especially as there's a child in the middle of this. What do you think?