Bucky nodded. He let Steve help him sit up but clung to him to drink, still not used to not having his left arm to support himself with or use in general. He gulped down the water then was happy to lay back.

"If I sleep... you'll be here when I wake up, right? You wouldn't be gone?" He was afraid of being alone. He didn't want to be isolated anymore. What he would do if Steve was going leave, he didn't know. He also knew, logically, that Steve wouldn't be able to stay with him forever - he was an Avenger and saved people.