My friend didn't say if his was from a sexual experience. But I would guess not due to his age but you never know.
As far as my guess of what this diseases is.
Virus first, then probably entero, whomever listed that at the beginning was amazing.
I went to the overall site, then researched more, and it fits almost perfectly, symptoms and transmission.
And to be more specific - I think cocksackie b.
Also - just a quick thank you to teedot for the support a few months ago when I was really worried.
I am still taking - garlic to combat virus, b12 and vitamin e, d and c - and finally a baby aspirin. If this does get to my heart I am hoping the aspirin will help.