I used to be like OP - just interested in the cock, and a little squeamish about 'excessive' touching, or kissing with other guys. But I had an encounter with an older guy and it kind of changed everything. He was burly and hairy, and about 15 years older than me, and we had met on another site, lived close to one another. We were having a lot of fun, talking and taking our time through the encounter. It just sort of felt right, so I leaned in. And now I kind of like kissing other guys. It's different than kissing a girl, it's more aggressive or intentional or something.