If Sephiroth hadn't followed his surprise up with that should have been obvious, Cloud might have done it for him. Who else would it be?

Cloud's pulse picks up again as those oddly soft hands make their way lower and start to fiddle with his belt. It makes him think once again that he ought to be doing something, rather than making (letting?) Sephiroth do all the work, so he reaches up to try to push the coat off of Sephiroth's shoulders. The man's hands are good, but feeling more of him skin-to-skin would be better, he thinks.