I don't know if I'd say "homophobia" as opposed to just nosiness. I assume the kiss was more than a peck on the cheek, to cause anyone to think twice. Unless, the others knew he was gay, and knew who the 65 year old was all along. You'd think the older guy would be aware of how "it would look". A French kiss 65/18 would cause attention no matter the gender mix.
But, it's not my life. I don't care.
"Through The Sacrifice You Made, We Can't Believe The Price You Paid..For Love!"