That is exactly how Scout is to Ripley, and it probably looks similar to yours because Scout is my little petite girl and Ripley is a very big boy. It's been going on for over a year and half. What has helped the most here has been Feliway Plug-ins plus the fact that Scout has short legs and doesn't land many of her swings on Ripley. She bosses him around, runs and smacks his bottom as he jumps up on anything. She will even walk up to him sleeping and start smacking. He finally has learned to stand up for himself a little. He has never hit back but if he stands and raises his paw she will turn and run.

I think the spraying her idea is a good one too. Good luck.