He always saw good in others then all of a sudden they changed. The glow the twinkle was gone from them. He asked what was wrong they told him nothing. There was some kind of heartache or mental block keeping them from achieving their full potential. He would respect them but they would change their attitude towards him which became a problem.
He was a good friend to his peeps but once they got a partner or in trouble they'd vent he would listen eventually this loop would continue to be reocourring cycle. He would be the scapegoat goat and kept out. He understood people found love and would start relationships he got the vibe they were with the wrong person but that made them happy who was he to come between the happiness that's what their heart wanted.
They would no longer be friends grow apart sometimes unite but other times just lose contact.