I honestly don't mind if Eugene and Hari end up together because they're not actually related, even if they are siblings. The fact that Eugene is depressed because he doesn't ruin their relationship makes me so sad...and any person that's been rejected or couldn't confess their feelings (both apply to me) will know how he feels and can relate to him...
You gotta love that shopkeeper (not like actually love him, but you get what I mean)...