Sounds like something is up.

I know that Ripley used to get "romantic" with an old Oscar the Grouch hand puppet and would drag it out in front of us and go at it. He was neutered when he was 5 1/2 months old and he did this up till about age 8 when I finally had enough and threw Oscar away because Ripley brought him out while we had company.

Anyway, Ripley now stalks Jazz like he wants something from her. He just started it this year and she senses when he is stalking her and she cries and runs. She usually has to jump up somewhere he can't to get away. He does it frequently. I think he has romantic thoughts too.

I don't know but I'm going with that.