Recently my missus has playfully used her finger to push my asshole. She has done it only twice and wasn't trying to push it but it felt really nice and go me wondering how it would feel having her insert her finger in me and try to find the male g spot.

It sounds like it could be fun and mindblowingly pleasurable as well... should I tell her how it felt and what I'd like her to do or should I just wait to see if she does it again?

She must be interested as she's done it a few times now so maybe she is building up the courage to mention it to me as well.