Whats it called when you like to fantasize about sex but the idea of actually doing it repulses you????

You might be able to identify as asexual.

Asexual = experiencing no sexual attraction towards any gender.

And, just for the record...

Sexual attraction = desire for sexual contact with another person. (Having sexual fantasies with no intent of living them IS NOT sexual attraction.)

A lack of sexual attraction is the ONLY defining factor of asexuality. Aside from this, the asexual community is very diverse in its attitudes regarding sex, masturbation, porn, sexual fantasies, etc. A majority of asexual people are either sex-repulsed or entirely indifferent towards sex, while some others might be curious about sex or even go as far as wanting and enjoying sex. Many asexual people masturbate, and many watch porn or fantasize about sex or read adult fanfiction. This does not reflect their personal feelings about sex and sexual attraction.

If you want to understand more about how you might fit in among the asexual community, I'd suggest reading through the FAQ on the AVEN (Asexual Visibility & Education Network) official website: http://www.asexuality.org/home/general.html

It's called "being a young teenager who is not ready for real sex just yet."

If you're in your 20's, counseling might be in order. OR - you may not have met a person you want to have sex with. Porn is not realistic. Personal chemistry matters a LOT to some of us, not so much to others.

Do what works for you. There's no harm in waiting for someone who rings your chimes.

I don't know what the word for it is, but it's completely possible.

See a shrink

you could possibly be asexual