Question to the bisexuals out there

I've been having this identity/label dilemma for a couple of years now and I wanted to see if anyone else has experienced this:

So I have been attracted to men for most of my life and I've had a female crush once. But it wasn't for romantic reasons. Like, I wouldn't see myself dating her but I found her physically attractive. This made me realized I wasn't attracted to women on a romantic level but on a more Sexual(?) Level. 

So my question to you is: 

is this considered as bisexuality or is this something else entirely? I know some people have labeled this experience as being a hetero- romantic bisexual but I honestly don't know.