From a friend of a friend.

"I've never seen you here before."
He spoke in a hushed tone as he leaned against the counter in curiosity.

"I've never been to Mondtstad before. Although, It's beautiful."
His deep voice had a warm tint to it, a thoughtful smile crossing his face while meeting the vibrant red eyes across the counter.

Alt if you need more detail :)
(When Traveler and Kaeya come back from their trip in Liyue, Not only do they travel back, but to Angel's share to grab a casual drink and catch up with their two new friends: Childe, and Zhongli. Originally, Traveler had brought Zhongli, and Kaeya, Childe; But of course, Traveler had been called away due to many Mondtstad now that they had returned.
Once the day starts to turn to night, and the tavern slowly becomes empty, except for the remaining four; Zhongli sitting at the bar, Diluc working behind it, and Childe all over Kaeya by a nearby table.. Things eventually only lead to fate for the one behind the bar, and the one at it.)

I do not own Genshin impact or the characters, All game and character credit goes to Mihoyo.