I've had a bad experiance with boys in the past and this guy asked me out but i'm scared what do ido

I've had a bad experience with boys in the past and this guy asked me out but im scared what should I do? and i'd be scared to take it further help please

This sounds like a common problem with young adults. Young guys are too pushy sometimes, because they got it in their heads, partly because of media craze about sex, that their sole purpose is to have sex with girls. Or more precisely, to make the girl "succumb" to him.
We live in a free society, meaning each adult can do what they want. And if the girl does not want sex, it's rape. But there are so many situations in between. The girl is just not ready, and the guy "begging" her (or bugging:). Have you read Hariki Murakami's "Norwegian Wood"? It explores that. If girl succumbs, both feel emptiness and loss of feelings the morning after.
I think the only way for you to continue dating men is to learn how to be assertive that you only want to do what you want and when you want. Without looking like a prim prude or something.
It's complex topic. But in short, first learn to be in relaxed assertive body state, to give correct body language. Second, show compassion and understanding while saying that you are not ready. Look in the eyes.
This gives message that you are capable of connection but not ready yet.
I will finish now, but it's a big issue for the whole generation. Keep looking for answers. Best