How do I stop my sex block or sexuality block?

I am bisexual I know that I am not confused about anything. When I think about 'adult-fun' later on in my life. I get scared about things like his 'stuff' but I don't have a problem with her 'girlfriends' or lower friend. Do I have a phobia with sex or is this just something that will go away over time?How do I stop my sex block or sexuality block?Its just that you are more into fun with she than he.... it should be alright once you get some experience on it.......How do I stop my sex block or sexuality block?It's natural to be afraid of stuff you haven't done. It should go away with practice. but it would be natural as well to prefer one over the other.