The context of the following conversation is Quinn starred at Addison for a moment when they were looking at them in the store.:
Quinn says I caught a look at Addison while we were shopping today..
The friend responds You did? What did she do?.
Quinn responds She looked right back at me. Our eyes locked on one another..
The friend responds I bet you felt a flutter over that one, huh?.
Quinn responds You're right I did. She is so cute it's hard not to look!.
The friend responds Be still your beating heart, my friend!.