Responses
Because Chang has looks yes but his personality is shit. Why be with someone who hurts you. In this case Chang could have helped Ed without putting him in debt to him and then smashing Ed's nose in it like a naughty puppy who just wet the floor.
Imho I think Ed looks at Chang like an estranged older brother.

Why do the comments about Edd and Chang wanting to have sex have so many dislikes? lol