I'm trying to find this korean drama that I watched a long time ago, but I can't remember the name >_< 

It's about a married couple (i think), where the wife works and she starts having feelings or a private relationship with her boss, on the other hand, the husband likes this women next door, who has OCD and she's married too..... and yeah that's all I remember, 

 SOMEBODY HELP! I WOULD BE SO GRATEFUL ^_____^

i'm not sure if this is it.... YOUR NEIGHBORS WIFE.... 22 episodes came out in 2013... I actually thought about watching it, but forgot until I read your post.
Thank you for replying, even though it wasn't the right one ): Should of mentioned that the actress had a distinctive mole on her bottom lip, this was soooo long ago, I'm hoping to find the drama again ahhaha!
The only actress, with distinctive mole close to her lips, that comes on my mind is Park Shi Yeon. If she is the one you are looking for than the drama could be A Bittersweet Life (2008). I didn't finish the drama, so I'm not sure about similarity with your description, but it definitely is about adultery.