Five characters that would make terrible real-life boyfriends... Quirk Books:

As we know, there are some characters written out there who would make amazing boyfriends. Well, for every one decent human being, there are dozens of terrible ones. I mean, terrible. Would-not-date-ever. And I’m not entirely sure why anyone would.

This isn’t to say I dislike the books on this list, I’m just saying I wouldn’t fall in love with any of these guys.
Three of the five listed are TOTALLY on my run-away-screaming list. I'm pondering on who else to add, but apparently need some more tea to kickstart my brain this morning.

I'm sure that you have some ideas?