Dr. Handsfield and Dr. Hook,

I am a 50-year-old circumcised male. I had a one-time MSM encounter in which another man and I masturbated next to each other, and for about 2 minutes we masturbated each other. I would like to understand the real-world HIV transmission risk if he had his own pre-ejaculate on his hand while masturbating me.

There was nothing unusual about the encounter. He stated that he is married and that his only other sexual interaction with a man was oral sex. I have read similar questions you have answered and have also reviewed the scenario using CDC, OpenEvidence AI and Amboss Lisa AI. Across my research, the consensus appears to be negligible or no risk (I do get hung up on the term negligible), but I am an anxious person. I feel a direct response from experts in the field would help me understand the true risk and whether HIV testing is medically necessary.