Am I Bisxexual or???

Hi i am a 25 year old woman and for the last few years i have always wondered what it would be like to be with a girl.. Even though i am engaged and very happy i still have curiousity about women... When i was in my teens i always had a bf and was very shy, so i had no real urge to experiment.. But now its all i think about... My partner knows about this and is very understanding.. But what does this mean for me..? I check them out, i love movies and , its just confusing me... Has this happened to anyone else or happening to them now?