What Is The Risk Of Contracting HIV If I Touched Myself After Giving A Hand Job With Possible Precum Involved, But No Ejaculation?

I gave a male friend a hand job. While it was happening, I occasionally used my own bodily fluids to help keep his penis lubricated (we were in the car and didn’t have any). What are the chances of me contracting HIV from touching myself after touching his penis. It’s possible precum was present, but no ejaculation.