Maggie did not turn him down. she said it was not a "no", but it would be too complicated. basically, she asks him to hang on, something more hypocritical, childish, manipulative than mature ! The worst thing about this story is that there is no great love or revelation behind all this, no imminent happiness, just two people who are bored in their lives and seeking to fill the void by a story that a third close person, hurt by her feelings, suggested to them. I was a big Japril fan but frankly, I want jaggie to happen, let them end up together, so we can see Jackson turns his back when she will have her Alzheimer's or sooner, because coward that he is, he doesn't know facing any difficulty, and because "The number 2 Grey" that she is, exist only to make Meredith look good.