I am gay, I have taken Prep, and it has not changed anything with my PFS or my erectile functioning. When I take Prep I do not have a fear of getting HIV, a fear that has been around since HIV/AIDS starting in the 1980s. Generation X was especially fearful of HIV because we were entering our late teens and early 20s without treatments, well, not til mid 1990s.
@irishguy754 is feeling good now, and he has admitted to having mental health problems. A lot of us gay men have mental illness just from being gay, being threatened by HIV, being threatened by conservative people and religions in society, etc.
So I think his improvement is because he is feeling good psychologically. Which is wonderful to read! His PFS and many others’ PFS may be part psychological–or, having mental health issues make bodily functioning worse—like confidence in bed, confidence in getting and keeping an erection, feeling good because you are allowing yourself to feel horny/libido.