Suggestions!

I lost my virginity 3 months ago and have been sleeping the same guy ever since. He keeps asking me what I want to try and what I want him to do. He's way more experienced than I am and has done everything I've suggested or wanted to try so far. He is still asking me what my fantasies are and what else I want to do but I don't know anymore! He's the only guy I've slept with so I'm not all that experienced with what I want! Any suggestions that you would recommend??