I am a male and was making out with guy when he bit down on my lip and i could taste blood in the inside of my mouth. i spit it out (not sure if there was really blood) and continued french kissing him for an extended period. am i at risk for hiv?

Biting has been described as an HIV risk since the beginning of the HIV/AIDS pandemic 40 years ago, but in all that time there have been no proved cases of HIV transmitted by biting. That doesn't prove there is no risk, but obviously it is extremely rare if it occurs at all. Since you're uncertain, why not ask your kissing partner to be tested for HIV? If negative you will know there was no risk.

Any time there is an exchange of bodily fluids there is the chance of contracting HIV and other STD'S. Saliva can transmit oral herpes and the Cytomegalovirus and Syphilis but so far no HIV. If you had bleeding gums and your partner also, or a cut lip where there could be an exchange of blood, than exposure is very possible. Just saliva alone is not enough to transmit HIV.