Matter of fact I just had a fraternity reunion and I must have said and heard I Love you man about 30 times in one night. All while giving the fraternity handshake and a strong hug.

But this part is so unnecssary
"Think, leaning on someone for a few minutes, holding hands, rubbing their back or sitting close together not out of necessity but out of choice."

We have chicks for that kinda contact.
I did notice while in India that the men are very affectionate towards each other. And personal space is not as important as it is in America. But over there the men tend to interact with females way later in life. Sometimes not till marriage.