How to Talk Dirty During Sex 🤭

Iv always been more submissive and quiet rather than the opposite, and sometimes struggle with dirty talk in the bedroom. In my first relationship he made me comfortable enough to partake in it, but even then i wouldn’t feel super confident in myself while saying those things. The guy I’m sleeping with now tries to talk dirty sometimes, but i never know what to say back or how to respond. I feel like its fake and weird. Or that I’m too nice to be talking like that, even though i think its sexy and know it turns men on. I do want to talk dirty back and keep the excitement going but i cant get myself to. Any tips?