With a light growl into the kiss, when she tugged on his hair, he shifted his weight a little, and rolled them over so that he was on top. Knowing that position couldn't be comfortable, from the stress that was in her back. And he could do so much more to her on top.
Slowly Bucky pulled from the kiss, so that he could draw small nipped ones down along her jaw. His tongue tasting away any sting each nibble might have had.