Caitlin & Rosa
Okay, Caitlin. Rosa would remember it for as long as it was important to her in some way.
"I know Barry," she explained, didn't bother explaining that they were friends, figured that was pretty self-explanatory or otherwise not important. And not explaining more meant she didn't have to try to find a reason as to why she liked Barry in the first place. He was relentlessly cheerful and happy and they had practically nothing in common. But then again, she didn't have too much in common with Jake or with Amy, and they were her best friends.