No shade to OP because they’re not the only one doing this but I fear too many of you are taking the bait and just need to ignore stuff like this and move on because interacting only makes it worse
Why do you think other peoples labels are something you have to be okay with. Even if you’re “not okay” the trans man is choosing to date a woman who calls herself a lesbian, and the lesbian is choosing to date a trans man. It’s not your relationship