To keep it simple, My best friend back when we were kids started my whole Diaper fetish. Back when i was around the age of 10 he stole a bunch of pullups from his sibling and told me to where them with him. It quickly came on to be a thing we did every time we hung out and it lasted until his parents stopped buying them. We have not talked about the topic in in over 8 years. I always debated bringing up the topic and asking if he still felt the same way. Is there any discreet questions or probing I can ask without being completely direct.