Most Helpful Guy
You can expect it to start with what was promised and he will be hoping for it to end with sex. The expectations go down if this is early Saturday afternoon, but Friday or Saturday night are romp time.
Want to keep seeing him but avoid this situation without killing the mood? Tell him that you are very physically attracted to him but you want to take things slow because of some past experiences and you really don't trust yourself to be with him in that situation. He will feel flattered and he'll also know that patience will ultimately be rewarded.