Sometimes when a cat grooms another cat, it’s nice. A cat helping another cat out, cleaning those hard-to-get spots on the back of the neck with a friendly lick.
Other times? It’s more like, “Hey, I want that nice nap spot, and I’m going to annoy you until you give it to me.”
I have two females, 14 and 4, and the older female tried to passive-aggressively groom the younger one into moving out of the spot she wanted but the younger one was like ‘jokes on you, I’m into this’ and now she constantly bugs the older one to groom her face. This has gone on so long they defaulted to being best friends, even if the old lady is a bit of a curmudgeon.
Sounds like my best friend, she “bullied” me into loving her
My cats (4 and 1 yrs old) have an almost identical interaction.