Going crazy

My husband wants and tries to have sex with me for more than a hour and I’m tired of It. I can be done after 15 or 20 mins. It makes me cringe and I’m not into It. Last night during g sec I told him I was going to tap out and he wasn’t going to get to cum, that’s how desperate I was for it to be over… The longest that I need is a a good 30 mins. After that I’m honestly bored and just want him to get out of me…. Anyone dealt with this? We been together for 10 yrs.