Understood the lure and the need. That was not to say that Kirk shunned all relationships - he didn't. He enjoyed having a closeness with certain members of his crew, and the intimacies that physical pleasure brought. Naturally one would find themselves more attached to someone they shared such an experience with. He simply never felt the need to be tied down or to tie someone else down. He was content with his moments and the knowledge that he gave as much pleasure as he took, happy to live with that strange balance of friendship and lovers.
Love was messy. Love was painful. He couldn't do that to someone. To himself.
"Well then you should have no trouble keeping up with me, then should you?" Kirk purred, the sound melting into a moan. He snapped his hips forward, grinding hard and shuddering as his cock slid against Jack's. Nimble fingers worked their way between them, wrapping around their shafts as he thrust, tongue mimicking the rhythm.