[ It's not so much so that he can enjoy himself, but rather so he can let go and give the bloke what he wants. Maybe it seems strange but over the last minute or so a plan has started to grow in the back of his head. A plan that might land him with a willing blood donor and when there's a regular hot meal at stake he doesn't care much about whoring himself out for it.
The bulk of this man doesn't worry him, even though Jack is successful in his efforts to back him up against a wall. In ways, it reminds him of Angel — Angelus — back in the day when he still was the big boss. Their godfather. The head honcho of their dysfunctional little family and that comparison alone makes it almost painfully easy to go through with it.
He gives the other a glance, heated and hooded and sly and then he moves without hesitation, hand latching out to grab a hold of the back of Jack's head as he initiates a deep, clashing kiss. The moment that delicious coppery taste hits his tongue he tenses like from a small jolt of electricity and where there was previously just gusto and determination, there's soon genuine hunger. ]