The kiss was a little unexpected, if only because he expected Sinjir to be too out of it to initiate anything. Ba'al's content to let Sinjir lead the kiss. After all being too forceful in return could accidentally break Sinjir in the wrong ways. He's not a hundred percent certain where his most fragile pieces are.

"Hm, well, do tell me when you think of it," Ba'al says between kisses. As tempting as it is to keep going right there, he does pull away after a minute. "You need to be cleaned up. There's a bath chamber. Get up or I'll carry you. I don't care which."
The attached bath chamber is mostly tub but it has everything of a proper bathroom. And yes, he would pick up Sinjir, throw him over his shoulder then dump him in the tub.