shit myself for this

all these times I always know that I'm gay and into dicks and never think about this thing would happening. but why I when there's a girl promotes her OF came through my FYP I got hard and I can't control it, but for the record I don't jerk it off and just let it pass until I don't get hard again. is this mean I have a slight Bi side in me? (even if that thing exists)

Note: I'm sorry if this post sounds stupid and probably so shitty. but thanks for read my post