Female led relationships discussion

Hi, I’m new here and really keen on chastity play with my partner, but I can’t quite figure out how to bring it up or find a way to get her interested in it before even trying that. So I was wondering things like what role you play in your relationship, how you first brought it up or discovered your partners kinks, how you got the confidence to ask your partner about it, and how long you were together before starting this would all be appreciated.