Yes.
everytime you have sex you give away apart of yourself to someone else, no matter if you think "its just pointless sex" subconciously your at lost. The lost of value upon your body and a lost of pride.
whether you beileve in the bible or not, the fact is sex was ment to be intimate between two people to create the feeling of being "united as one" and creating offspring.
just a thought to ponder.
that's why I am a virgin and I choose to remain one.