Best mate (BM) met a married couple through work about 6 months ago. They are same gender - 'husband' (I'll refer to them as Q) in throes of transitioning for some time, wife decided to stay with them and all seemed content.
BM became friendly with them, particularly Q who she has been out with on several occasions.
Prior to Christmas Q told BM that they were putting their house on the market and separating as DW had decided she wasn't happy to continue with the altered relationship. They said they would be looking for a new home in neighbouring city and invited BM to move in with them as a lodger (she currently flat shares so this wouldn't be a radical change of circumstances).
An offer has now been accepted on a flat and the move is planned for early spring.
My concerns are:
Q is about to embark on a prolonged visit overseas for the final part of their reassignment surgery. BM has said they will have a tenancy agreement and I know the internet is a wonderful thing, but there is potential for the legalities to not be sorted before the moving date.
Will BM end up caring for Q going forward? They are approx 15 years older and I can't imagine the recovery from surgery will be that straightforward.
BM has only known Q for 6 months. She doesn't have significant income or savings and the move is a good one for her financially but if it all goes horribly wrong she will struggle to find somewhere else to live long term. I'd obviously have her stay with me for as long as she needs but don't have room for anything ongoing.
BM will admit herself that she is a people pleaser and finds it difficult to say no. Despite the age different Q seems to be a party animal. The last time they went out Q picked up a woman and as BM couldn't get home easily alone they ended up both crashing at her place. Another guy turned up and BM ended up being talked into taking coke and sleeping with him.
I am really concerned for BM's security and wellbeing and that she's getting into a potentially difficult and possibly dangerous situation. She is an intelligent woman but arguably vulnerable and doesn't always make good choices regarding the people in her life.
AIBU and how the hell do I broach this? Having grown up together we don't really have any boundaries in our friendship but I don't know how to talk to her about this, particularly as she is aware that I tend towards the gender critical. I would however, always take an individual at face value, but everything she's told me about Q is waving massive red flags.