Steve didn't mind acting as a stabilizer; he just stayed still so Bucky could use him to stay up and drink until he was finished. He set the cup aside, taking a seat by the bed again, nodding in answer to the question. "I'll be right here. I'm not leaving your side." After all, that was what a bodyguard did - he stayed with his assignment. He'd figure out how they were going to work out other things, like showering and sleeping, later. Steve was a light sleeper, though, so even if he dozed, nothing would get by him. But for now, he was wide awake, and he wasn't leaving this room. He was here for as long as the president needed him - that duty came first, before any loyalty to the Avengers. He was, after all, still an Army officer.