Harry was crying because Louis and Eleanor had to take a picture together an modest made Harry slip on sunglasses to make it look like he wasn't crying. When the picture was done Eleanor walked away with another man and Louis went over to harry.
So I guess that means Louis? (They're just best friends, I would do that with my best friend any day.) (Just remember, I'm not a Larry shipper. But yeah, I support your decision too!) (but NARRY 4 LYF WOO!