When talking about sex just say that a girl who orgasm really turn you on so you love being there to help your partner reach orgasm. It can be a cunnilingus, caressing her, fingering or using her dildos or other toys on her.
If she start talking about kink maybe start slowly. Talk foot fetish before chastity, MMF before cuckolding or humiliation before Femdom.
Don’t say you have just some kinks because it’s a lie. You are a kinky little bitch.