How to slow down?

I’m talking to this guy I connected with on this dating app. It’s been two weeks and we’ve talked everyday. I find myself extremely attracted to him and he says the feeling is mutual. Problem is, I’ve been beyond hurt by my ex and have the tendency to question everything now. I do not want to move too fast and end up hurt again. The last heartbreak nearly took my life. How do I continue to show interest but not too much that I don’t come off as uninterested?