Do you think he'll bang the Mother of Dragons?
And then the kid that is the Raven will "see" that Jon's dad is her brother, go up to Jon and be like "Hey Uncle Jon - You just banged your aunt."
I'm thinking she might recognize the Targaryen blood in him. I also think he's gonna be the second dragon rider (because of his Targaryen blood).
If Rhaegar and Lyanna got married before Lyanna died giving birth to Jon, then Jon's last name is legally Targaryen (which makes more sense as to why Ned would try to hide Jon's true identity and pass him off as a bastard). Remember Lyanna whispering "if Robert finds out, he'll kill him, you know he will." Why would she say care that much about a son who was the product of rape? It wouldn't make sense.
But Jon and Daenerys definitely meet this season. There have been photos of the meeting (taken by people who snuck onto the set).