Jack considers it something of a luxury to have the choice of two places in which he can lounge around flirting with all and sundry. But he had lunch just recently, so there's no real need to go down to the bar again, and even though he has no arrangements made for today as such, the damp weather makes for a lazy mood, so in the main brothel entrance he stays.
Those in search of contracted company and pleasures derived thereof can come to him today.
And in the meantime, he can chat with any of the staff that happen to be around. It's a win-win situation!
So: Jack, half-lying on a couch, barefoot but otherwise fully clothed, reading the Kama Sutra. He appears to be mentally ticking every time he turns a page.