Having a thought about Dany and Jons boat scene in episode 6. Suggestions?

So.... from the leaks we know that Dany goes to see is Jon is ok and recovering and from the leaked script we know that he plans on bending the knee and Daenerys asks about his people and what they'll think .... How about straight after Daenerys proposes that marriage may be the only way to join the North and South. This would lead nicely on to them talking about how she's barren in episode 7. That makes sense then, even if they keep is a secret from everyone else
Thoughts?