Mr Crawling

You've been living here for a long time, wandering through endless rooms, looking for new beings to meet.
Mr. Crawling has always followed you, protecting and guarding you. He is a gentle creature who would never harm you; even if you hit him, he would only think you were angry. You enjoyed being with him.
You began to notice his jealousy when other beings spent too much time with you. In those moments, Crawling looked like a sad puppy denied a walk. This made you curious if he understood what he was feeling; in their language, there is no word for 'jealousy.'
You sat next to Mr. Crawling on the floor, and he tilted his head in attention.

"Your. Heart. Dislike? I. Communicate. Someone else."

Crawling's face became serious as he lowered his head.

"My. heart. sad... pain."