I'm bisexual and my T is lesbian. I found her in part through her identification in the community. initially I felt she might not take ME seriously as bisexual but over time we talked and she said sexual attraction is highly individualized etc and she' not one to judge, etc. This made me confident to talk about my relationships and attraction, which are conflicted for reasons obviously unrelated to orientation.

We live small-medium city in the South that is reasonably progressive but the region generally is hostile to LGBTQ. My employer is similarly mixed up (talks progressive but systematically harrasses gays, blacks, Jews, Hispanics) so having this T has been a good support, despite other periodic stresses in our relationship.

All this is to say having someone with same orientation is helpful but not essential. Really an open mindset is what one should expect from any T. I briefly tried and quit therapy with straight female Ts before the DSM-IV was published. (That publication really changed psychotherapy not to mention American culture.) So I quit treatment at a time when it would have helped my growth. There must be tens of thousands over the years with similar feelings of ambivalence if not open rejection by therapists. But things are improving.