No one is going to contract HIV from oral sex even if they have bleeding gums. Saliva contains over a dozen different enzymes and proteins that inhibits HIV transmission.
Yea, most studies seem to prove that. What the CDC publishes about safe sex confused me though. I guess that must be worried about any potential liabilities if someone claims to have gotten it via oral. Numerically, we´re talking 0,001% chance, per exposure assuming the other guy is HIV+, right?