I (16M) have a great relationship with my partner (16M) but I get anxious talking. Advice?

We were friends for a little over a year and have been dating for 3 months. We are great at communicating boundaries, and he's super considerate and sweet. I want to have a good balance of deep and medium talks, but I don't know where to start. We know each other very well, but I wanna know more. We both joke about how we can barely hold a conversation. Would like some convo starters, questions that aren't corny, etc. Thanks!