Dating a girl.

So, I just found out that I'm bisexual. I have been thinking about that many years, but I guess I tried to escape from my own thoughts and was afraid to accept that. Now I decided, that it's time to make it clear. I want to try relationships with a girl. She is also bi and already had experience with woman's. Is it much way different to date a girl then a guy? What if she will want to date a guy in the same time during our relationships? Thanksss. :))