It would, of course, be a shock to wake up in someone's arms without knowing how you wound up there, but I'm happy that Lois processed the shock quickly, understands that neither one was to blame, and isn't reacting badly to Clark. Though she recently had a traumatic sexual encounter with Lex, she's not seeing this one with Clark the same way - that bodes well for the future. She believes him, trusts him, and still works well with him.
Since Clark understands what is happening to him, knowing that he's becoming under the influence of the red kryptonite, I hope he has the presence of mind to warn Lois - he can say that he feels the perfume from the shop is starting to affect him again and that she should go away so he doesn't do anything they might regret. On the other hand, though, Lois might not regret it.
