Boyfriend wants me to finger his butt

My boyfriend asked me for the first time tonight to finger his... you know. Ass. Lol. I’m not judging him, I’m happy he feels comfortable enough to ask me. I’m just not really into it...

I tried to a little bit and quickly backed out, we moved on and haven’t discussed it. He has never done it and I guess I initiated it happening because I would talk about how in my podcast Call Her Daddy, Alex Cooper fingers guys butts while giving a BJ. I just never thought he’d be into it.

What should I do? Should I tell him, try it again? Is there anything I can do to please him and not hate myself while doing it?

Arrrrghh