exploring, welcome here, hope we can be a help to you and your friend in any way possible.
I am very in tune with the emotional side of PC and other major illnesses and diseases, so I can answer your question straight forward. Without knowing the history or details, if I were him, and your feelings were positive, honest, and from the heart, not out of sympathy, I would welcome them. I would not have wanted to deal with my PC alone in this world, if this is the case with your friend. I have a loving, supportive wife of almost 35 years, and a close network of adult age children and friends. This has helped me immensely through this ordeal, and still does on a daily basis. To me, your honesty and sincerity would be the deciding factor if I were him. But then, I am an old school softy romantic fool, what do I know, lol. Good luck.
David in SC
Age 56, 56 at DX, PSA 7/7 5.8, 7/8 12.3,9/8 14.5
3rd Biopsy Sept 08: Positive 7 of 7 cores, 40-90%, Gleason 7, 4+3
Open RP surgery 11/14/8, Right nerves spared, 4 days hospital, staples out 11/24/8, 5th cath out on 1/19/9
Post-surgery Pathlogy Report:Gleason 3+4=7, pT2c, 42 grm, tumor 20%, Contained in capsular, clear margins, clear lymph nodes
First PSA Post Surgery 2/9 .05, 6 month on 5/9