How my relationship is going[coming out]

So here’s the story, so I met a girl and we dated for maybe a month or so and we were both already so happy but then one night she comes out to me as trans I was devastated. I sunk into a bit of a depressive state(ik i sound mean) because I thought I was straight but then slowly over the course of a few months I’m even more attracted to him and just im suddenly attracted to guys . I know this story sounds really dumb but am I not really gay or is it a phase.