Thank you for writing to Alterheros. To answer your question — only you can really know what your interest in men and women means. It may mean that you are bisexual, or in time you may come to decide that you are gay or straight. It can sometimes be difficult to admit a desire to have a relationship with the same sex, since there is still so much homophobia in our society. It is important to remember that whatever you decide — whether you are gay, bi or straight — they are all healthy and natural expressions of human sexuality. Also, remember that not being sure about what your sexual orientation is OK too. It may take time for you to sort out your feelings.
I hope this is helpful, and please feel free to write back again should you have more questions.