Nope, you're not alone. I often find myself laughing when I'm not supposed to at things that are over the top or just weird acting and all that, but I actually do care about (some of) the characters and/or their relationships as well.
ETA: Okay, so a post was deleted, but my point still stands; that it's not entirely bad and cheesy and trashy, like a lot of people seem to make it out to be. It shows that you can be serious without taking yourself too seriously, I guess, and I like that. Yes, there are some less than stellar actors (and also some I really like), but even most of them have had their moments, and yes, the script can be cheesy, but that gives me something to laugh about, and sometimes it's great.