Can I still call myself a lesbian?

When I was a teenager, I started identifying as a lesbian and only seeking out romantic/sexual interactions with women. I have always been more attracted to masculine women. What is confusing me now is that I have been in three long-term relationships which started out wlw but all ended up being me dating a trans guy, the third of which I am still currently in. They all figured out they were trans while we were dating, and while dating men isn't my preference, it didn’t change the feelings I already had for them (they were still the same people after all). I joke that I am the worst lesbian in the world because of this.

The thing is, it hasn’t changed my preferences. For a while, I thought I may be interested in men (because what are the odds lol), but I am just not. I did not enjoy any of the experiences I had with men prior to realizing I was a lesbian. I would still choose to only be with women going forward, and I have no interest in pursuing a man (cis or trans). It isn’t just about female vs. male anatomy. I feel like an imposter when I tell people I am a lesbian with a boyfriend. So am I a lesbian or bisexual?