The first time i was with an sp i was real nervous and everything we did for me was uncomfortable. It was straight to the foreplay and i didnt really get to know the sp. I didn't know how the interaction would be just bc i'd never had a one night stand before. So it was a lot different then with gf's in the past.
I suggest you find someone who will put you at ease first with some good conversation. Then when it comes down to the foreplay/sex it wont be as awkward or nerve wrecking. I'm glad i never stopped after the first encounter bc after it has been wonderful.