User blog comment:Emilia Da'len/True love/@comment-76.187.156.19-20130612042905/@comment-108.60.179.37-20130612091155

That actually makes a lot of sense. I've considered that maybe Jon's father wasn't actually Ned's, but I never thought he might be Lyanna's son. It doesn't make sense that Ned is so hesitant to talk about Jon's mother. Sure, maybe it's because he's simply ashamed to admit he had a lapse in honor, but it doesn't seem that straightforward, and seldom does Martin write what everyone is expecting.

I think that if Jon isn't Ned's, then he's definitely Lyanna's. Ned does tell Jon that he has Stark blood, but which Stark's?

That being said, even if Jon is Lyanna's son, it's still entirely possible that Rhaegar kidnapped her and they weren't actually in love. It's entirely plausible they were though, as it's stated Lyanna did not love Robert the way he loved her.