Could this be a really long 'faze' or am i bisexual?

I am 18/female and for the past two years or so I have found girls more and more sexually attractive, but I'm not sure what this could mean.
All my life I have been attracted to boys, had boyfriends, and had sex with boys and that isn't going to change,...

but I do find I can look at a girl with the same sexual attraction as I do with guys.
I have never had a girlfriend, but I've kissed girls(and liked it), but havn't done MUCH more than that, but I can and do fantacise about gping firther.
There is this one girl in perticular, she works at my gym, I have never spoken to her, I do anything to avoid even eye contact. when ever I see her I get this feeing in my chest, like I want to know her, but I hold back.
The thing I'm not sure about with all this is that I have never gone far with a girl, so I can't be sure that I would like it, and I know I couldn't go without guys, but I can't ignore this feeling I get when I see an atractive girl.
could this be one of those silly 'fazes' or might these be genuin attractions to women?
can I be bisexual if all I have done with a girl is pull?

only you will be able to figure out what your sexuality is
but this information might help you
Straight = sexually attracted to the opposite sex only
Gay = sexually attracted to the same sex only
Bi-sexual = equally sexually attracted to both sexes
Bi-curious = sexually attracted to the opposite sex but are open to experimentation with the same sex

There's a reason being bisexual is like being bi-curious. Curiosity about the same sex is normal. And there's nothing wrong with it. Since you've felt this way for a while I think it's no longer a phase. I think you should give being bisexual a try. You might find out that it actually just is a phase, or you could really like it. Just follow your heart, and do what makes you happy

no
bisexual and bi-curiouse are two completely different things
but most kids and teen nowdays refer to them as the same thing because they havent learned the difference between them

That's not really the point.

I'm the same way, I find girls sooo hot, And I've had only two girlfriend and did things with them but I'm into guys too.
It doesn't really mean your bisexual sounds like your bi curious.

Good luck sweety.