He is cute in a nerdy/skater sort of way.
He is a skater, and for no apparent reason I find that to be an incredibly attractive quality.
He's been through an insane amount of pain and loss but still turned out a hero.
He is really smart. He loves science and it comes naturally to him (he came up with that one equation). He's not arrogant about his intelligence though.
He's kind of awkward and shy but I find that adorable.
He seems really intellectual and deep. Like someone you could have amazing discussions with.
He seems pretty down to earth and real. He's got a lot of problems but he figures out how to deal with them and he grows a lot just within that particular movie.
Despite not being Thor, he is incredibly strong.
I like his clothing style. (Not the spider suit, but all the other times).
I like his crazy hair.
So there you go.
Also because of that movie (even though it's Coldplay...):
And nothing to do with Spiderman: