Hint?

I've been with my OH four years. We've both been married before. We've agreed we'll get married. My question is, how do I figure if he wants to officially propose? We could just start planning it now, but I don't want to steal his thunder if he's got something in mind. Would you guys want a reminder? I don't think I would. It sounds like he didn't have many choices in his first wedding so I don't want to replicate that! Haha