Take them up on the date. Don't worry until they want to reach first base. Nothing may come out of the date anyway. So enjoy the event, feel good, learn to like going with a guy. Not all guys want or expect sex straight away. Nice guys are just that. Nice!
A kiss and a hug doesn't hurt anyone. If it goes on from there, well that is when the discussion starts. But if you are not used to guys you will never know what to say or do anyway!
On my first date I ended up with his tongue playing with my tonsils, I was in heaven. He seemed pretty happy as well

I had never kissed a guy that I liked before. Later when he, and I, wanted to go further I explained the situation in a public place (over coffee). He took me to my home, I phoned a friend saying he was with me and I explained to him why.
We then both went to Heaven.

It was his choice, I also explained what I would and would not do.
He is a man. He loves me.
Real men are real men.
But you have to give them a chance to be so
JMO
Cindy