To be honest, I'm not sure. I'll try to give the best advice I can, even though it'll be a but difficult since I've never really been 'bicurious'. Meaning, I've known I liked girls since puberty, but with boys it a bit different. Dunno. Anyways, the only way to find out, in my opinion, would be to try and have a relationship with a girl. Or at the very least, to talk to one of the more experienced women here. Which is, I'm telling you now, not me. I still haven't been in a single relationship yet.
We have this system that you may be interested and that would very likely help you in your discovery- depending on who you get. It's quite new and we're still trying to get enough people registered in order to match up. It's called
~friendship matchmaker~. For 'other', I would suggest you put something that goes along the lines of 'someone good at advice' or 'someone that could help me learn about my sexuality', things like that. If you do this, there's a good chance that you'll be matched with someone who can help you. The problem is, we don't have enough people yet as this is a brand new system. I hope this helped!