The sensuality of that hand at his back is precisely what he wants. Levi lets Erwin guide him close, hands sliding greedily up his chest before curling one hand at the back of his neck. There's a warmth in his eyes and even a small smile faintly on his lips as he raises himself up a little on tiptoes to meet Erwin with the kiss. A little precarious, perhaps, but he's not at all worried about slipping.

Not especially as he's pressing himself up against his husband, trapping Erwin's erection firmly between their bodies. The feeling of him, hot and stiff and large sends a shiver pleasurably down his spine, and Levi half hums, half growls his approval into the kiss. He's slow and exploratory with it, tracing Erwin's lips and mouth with his tongue. It may have taken a little coaxing to finally warm up to something more than just a press of lips, and even then, he doesn't always appreciate swapping spit (which he definitely can't think about too hard). But if he's in the right mood, Levi very much enjoys kissing.

Now, he most definitely is in the mood - Erwin's freshly cleaned mouth helps. Levi perhaps gets a little distracted with it, but without much to help even their positions, he relents and lets Erwin save his back, sliding back down to his heels. One hand slides downward too, the other splayed against his chest, and Levi looks up at him through damp lashes as he wraps his fingers around Erwin's length. He gives him a few slow strokes, tracing over the head lightly with his thumb.

"Think you enjoyed that almost as much as I did...look at you. So fucking huge and you've barely been touched."