My boyfriend says he has big plans for me? What could that mean?

We were talking about moving in together breifly and we were talking about if things go wrong and we split up. Then he said that's not going to happen, he's got BIG plans for me. Then we changed the subject... I'm curious what he could have meant? Hopefully what I think it is :)
My boyfriend says he has big plans for me? What could that mean?
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