The archer was looking at her. "Ohhh I know, just having a good time and relaxed and then somebody calls us." He packed up his stuff. He hoped they would get a proper break at some point.

He noticed her head to bathroom so he just waited. He knew she was obviously talking about things and not wanting to bother him with them. He knew he had been through a hard time after what happened.
He wasn't himself. Barton knew he needed time, He wasn't sure he could face Loki again. Though he would if he had to. 
When she walked out he noticed the sad smile.

"Oh well maybe vacation next time." Clint laughed a bit.