Guys, can you please  recommend me a completed romantic drama where girl falls in love with a man but gets rejected or gets cheated on etc etc and then another man comes along and they live happily ever after with the second guy? Plz no teenage drama. 
(I already watched secret.)
It's Okay, That's Love - it received a full 10 for me (it's in my top 5)

Others that apply:

Marriage, Not Dating
A Gentleman's Dignity

Oh My Venus (I didn't personally like this drama, but you might). 
Thank You (2007) seems to fit your need , its also a very good drama (I gave it 9/10 or so )