Source: Quora[www.quora.com]
First you must remove totally any and all desire or attraction for the opposite sex. So unless your able to 100% do this the best you will be is bisexual. Now you can be bisexual and still encompass all the same sex desires while also embracing your desire for opposite sex attraction.

It's good to explore to see how you feel. Many people don't know unless they try it much like food varieties.

Keep in mind being bi there is a scale of how bi you are? Example on a scale from 1-10, 1 being gay and 10 being straight. How bi are you? Maybe you'd like to be a 2? Or maybe a 9? Yes being bisexual does have a lot of room in it. I like being bisexual because your not limiting your options plus you can give a lot more to your partner too.

So if you want to be gay or be a Lesbian you have to completely detach 100% forever on any attraction to opposite sex period.

"Everyone is straight, until they got wets" - Lord Spaghetti 12:69.