why do some people want Daniel Radcliffe and Emma Watson to start dateing?

because then they will have "proof" of Harmione

because they have a lot of chemistry on screen and off

it's about all the gossip thing people just love hearing those news

I Have never liked them and never will

u must be romione shipper, right? why it is a matter for you if people like them together? harry and hermione doesn't seem like brother and sister to me. the story say they are but nor for me. i like harry/hermione and you prefer romione, we just have different opinions, end of story.

Obviously, they think they'd make a good couple. You might think they would be horrible together or act like brother and sister, but the world is made up of more than just one kind of opinion.

the same reason why some people (mostly Romione shippers) want Emma and Rupert to get together. It's sort of loke prof that they were 'meant' for each other. Or that it's just cute because they've been working together for years. Or that they just make a good couple. People have diferent opinions.

I don't know. I just don't get why people always want co-actors to start dating. It's too cliche and they probably have no emotional feeling for each other whatsoever.

Probably for the same reason you don't want them to: they like it that way.

This question is quite old but I'd like to answer it anyway, for a reason I'm not sure of.
Honestly, I feel Dan and Emma have the best chemistry in the series. Rupert and Emma were okay, while Dan and Bonnie didn't have much. Whenever I watch the movies, I'm always struck by how if I only watched the movies and haven't read the books, I would definitely be a Harmony fan (I'm a Romione and Hinny fan). Their kiss was much better than the one between Rupert and Emma, and I've always thought so. But anyway, yeah, I think this answers the question.

They want Emma and Dan to start dating for the same reason they wanted Harry and Hermione to end up with each other. Damn Harmony-shipping.