So women who sleep with trans men are in a lesbian relationship? Sorry to go back a bit (I've been walking the dog) but I might be able to throw some light on that for you!
My transmale friend - the one whose wedding I went to a while ago - lived as a lesbian for decades. As he transitioned his lesbian partner became unsettled and eventualy decided that she couldn't continue in a relationship with her lesbian artner once that partner was set on having a penos. So their relationship ended.
Transmale friend married a previously hetero woman who had no lesbian leanings... I know this as she too is a long term friend.
So the answer to all the 'what would a lesbian do?' questions is whatever they choose... there will be as many resons for decisions as there are people.
As I said earlier, which nobody addressed and some have continued with the 'posters here think transmen are women and should use female spaces' statement, I don't! I think that once an individual decides to 'trans' themselves they automatically 'other' themselves and will find it very hard to find a comfortable, accepting space everywhere/anywhere they go. It is inevitable that they will find conflict and, in the past, transwomen have known that and have been very quiet about their use of female spaces. That this is less the case now is the issue, the forcing, the invasion, the demanding is the problem. It shuts down any debate, automatially closes all lines of real commnication and, to be frank, I can no longer be arsed with much of it. It is tiresome.
Tiresome because the bottom line is, when push came to shove, I , like many other women have and will, realise when face to face with a TRA making demands, that the person making the demands is an entitled man and I WILL say no! The very act of the demand is enough to tell me that I wil not be comfortable with that man in a female space and therefore I will always exercise my right, legal and moral, to say no!
And all of this for what? None of the trans individuals I know want anything to do with it. Oh! That makes it sound like I know many, I don't. But I am in my 50s and so have many non conformist friends, many of whom have been 'gender benders' since the 80s.
WHy an't we go back to that? Cheerful and all encompassing acceptance of gender bending... whilst still being male or female?