Were they? Give me a reference for that one.
It is written that the love they felt for each other surpassed the love of women. But it was not a terminal sin on David's part because he went on to have many wives and children later. Young men bonding with each other or even having erotic moments is not unusual and in fact may be essential to a fully-rounded and dynamic personality, which heroes like David require.
Frequently in Tehilim, Mishlei, Kohelet, and in the Mishna and Talmud, the love for G-d
that a righteous person should feel is likened to the love the a man feels for a woman.
Just as a man cleaves unto his wife, so any person should cleave unto G-d. And if you
haven't served in a combat unit under awful conditions (and you clearly haven't), then
you won't understand how a group of men can become very close, love each other,
be willing to sacrifice their lives for each other, without it having to do anything with
sex.
You really disturb me, Satan.