I enjoy anal stimulation on my own using toys and fingers and id love for my gf to join in in my fun and maybe even use a strapon on me. What would be the best way to ask her to do this? Iv played with her ass alittle but not much.
I would suggest you continue giving her a little more anal stimulation and whilst doing it ask her if she likes it. Hoping that the answer is yes, you could then broach would she mind or enjoy giving you some.
Even if she doesn't like it to much herself she still may be into doing it for you. The key like most things sexual with a partner is communication. It's when to drop it into proceedings.
The next obvious question is just how far you would like this to go? Just a little fingering or rimming, prostate massage and pegging. What ever start slow a nd build up. Don't go right into what ever it is you want. Good luck be positive she may really love doing what you want.