|my first answer would be:
romance+shounen by rating
Superior & Superior Cross
Hantsuki (anime for ending)
also second all of the above
PS: I would suggest you to read seinen titles if you're looking for good and well developed romance.
let's just say romance isn't the strong point of shounen... except you are looking for ecchi-school-rom-com. you'll have better finds in seinen/shoujo and more serious ones in josei demographic.
I could add a bunch more, but it's a pain.
If romance is the main point, try my lists, if it's shounen, well I don't even know why anyone would only look for a specific demographic and not a genre so no idea, I guess you could always go back to genresearch...
also wrong section (looking for)
in need of romance?
uncommon, sad, sweet