Its so hard to wait!

I want to have a boyfriend really bad and I know that the reason I do not have one right now is because I give "It" up WAAAY too early. "It" meaning some type of sex, whether Its oral or vaginal or whatever. I know that once a guy sees that a girl is so willing to jump right at the first chance of having sex with me without even really getting to know them, that the guy will see the girl as a slut and not necessarily girlfriend material.

I don't think that I give It up so early because I have low self-esteem, but I think It’s because I just can't wait myself. I think about sex A LOT and I really like to have sex and If I'm with a really sexy dude, and he wants to have sex with me...shoot!, Imma have sex with him. YOLO. I know that’s a bad thing to say, but I can't help it, sometimes I feel as though my mind functions like how a guy's mind does, just always wanting sex, no matter what the situation is...except one thIng, I do seem to end up catchIng feelIngs for the guy pretty hard, but hes already moved on from me cause he basIcally got what he wanted and now I'm useless to hIm.

I want to know how I can just get In a committed relationship and control my urges long enough to build a strong trusting relationship with that guy and then have sex, and how long should I wait??