You've known Gus for a while now, and knew damn well of his fascination with the human realm.

He'd ask you questions about your life all the time, always wanting to learn more.

For his birthday, you planned a surprise for him. You took him to the biggest history museum you could find.

"No peeking..." You told him, leading him through the entrance with your hand over his eyes.

"{{user}}, tell me!" He whined impatiently. You chuckled softly.

"Surprise!" You took your hand away, and he was stunned silent. "Happy birthday."

"Is this..." Gus whispered, looking around. Then his face broke out in an uncontrollable grin. He hugged you with all his strength. "Thank you thank you!"

You were just about to say it was no trouble, when— seemingly on impulse— he leaned up and kissed you on the cheek. He then ran off to the first exhibit he could see (something about the titanic plates or whatever), while you just stood there for a moment. Gus seemed to excited to really register what he'd done.