I have had no boyfriends!?

I am 15 and single, I like it. But boys get really flirty and it grosses me out, I don't know how to act around them. I am planning to stay single after my GCSE'S that way I can concentrate on school. How will I ever know which guy is the 'one' because I want him to be first and last. Also kissing, haven't done it. Is that shameful? I have had guys ask me out, hot guys. But not now. I am pretty, I am British and look latino, or so people say. :L When was your first boyfriend?