Barry | Diana
If Diana hadn't wanted to come with Barry then she wouldn't have. However, she'd decided to head out and since the speedster had asked her to the party she'd agreed. Besides, even with how annoying he could be (sometimes) she didn't mind him. Barry was one of the good ones.
The demigoddess, unfortunately, couldn't get drunk either. Though it was more to her physiology than her metabolism. That didn't mean they couldn't grab a drink. She does, however, give a soft smile at his words even as they move over to where the drinks were.
"Perhaps we'll have to find you other suits to test out."