Technically, one man cannot love another man, love can only between a man and a woman, scientifically speaking.
A woman actually falls in love with another man after subconsciously smelling him, this way, again, subconsciously, she picks out the man who's gene pool is superior and as different as it can be from hers. (This is the reason that siblings with a brother and a girl, in which both the brother and the girl are very beautiful USUALLY don't fall in love with each other) from this point on some chemical processes ensue and the woman feels in love. Being in love is a purely scientific and biological process, everything else has been added by the romantics, and while it does make it all beautiful and nice, you mustn't forget the roots.
This brings us back to the gay man, a gay man is literally a genetically inferior person, if he really 'fell in love' with a man, that means there's something seriously screwed up in his genetic code, literally meaning he's more on the feminine side, because smelling out the perfect partner is actually a female feat, and works towards males, the same thing works towards lesbians but they get attracted to the look, like men do.
This is why lesbian couples are usually way more prone to falling apart and gay couples usually live quite happily together.
I don't have anything against gays, at all, I just wanted to add this piece of information to the thread for anyone who cares.
Nota Bene: As this is a scientific addition, everything should be taken with a grain of salt as scientists have been known to be wrong before, so don't take it close to heart if you feel offended, just take it as a different point of view.