It's certainly their most intense coupling for a while, and they have quite a lot of intense moments. Jack can do no more than lie there gasping when Ianto collapses on top of him. For a few moments, he stays right where he is, then he slowly forces himself to release his deathtight grip on the edge of the table and bring his hands down, dropping them loosely around Ianto's back.
Not for long, though, because soon Ianto's moving for the gag and he lifts his head helpfully so Ianto can get to the knot. The tie is soaked and taut, absolutely ruined, and his lips along with it, sore at the corners and aching from being stretched tight. He couldn't be happier. He moans happily as Ianto kisses him and he feels it with every movement he makes with his mouth in return and his arms come back around Ianto, trying to hold onto him as long as he can, so this moment doesn't have to end.