Welcome to Gaia! ::

First and foremost, please be mindful of which sub you are posting in. Since this is a post asking for advice it belongs in the advice sub-forum, which I have taken the liberty of moving it to. Note that the main forum is for discussion inspiring posts only.

Now, moving on to your question. I think if you approached the subject less crudely you might have more luck. Back when I was single, guys would constantly talk about worshiping my belly or moobs because I'm a chub and they were chasers. Of course, I know that's what turns chasers on, but for them to focus solely on that as if I were a kink toy was a huge turn-off. Remember, although you may enjoy a** it is attached to a person. They are not obligated to allow you to do anything to their a** if they do not want you to.

Secondly, find someone that does enjoy a** play. There are plenty of men that enjoy having their asses worshiped. Therefore, find someone that enjoys it as much as you do. Don't bring it up right away, but let the subject of sex gradually and organically come into the conversation. Once it has, just casually mention that you enjoy a**-play and see how he reacts. If he's against it then you know things probably won't work out with him if that's a deal-breaker for you.

Most importantly, don't approach the subject like you're a rabid dog. People don't respond to that well, and that eagerness will scare them away. Good luck!