I don't consider myself bisexual but from how I understand it, it's not always...specific? One day you might prefer women. One day you might be like, okay, well - I prefer men. Sexuality is this deeply personal shit and no one can tell you what you should be. If you're into me, as me, then like - I'm less concerned about labels or genitalia.
You're not fucking anything up. You can always just be honest with me.