I was going through Lee Min Jung (Boys Over Flowers) thread at Soompi when I stumbled upon a Youtube video. It features Lee Min Jung with her co-star Jung Kyung Ho (A Time of Dog and Wolf) from the series Smile, You singing "Way Back Into Love" in a program called Chocolate. I thought the song sounds very familiar than recalled that it was the theme song for the 2007 movie "Music and Lyrics" starring Hugh Grant and Drew Barrymore. It was one of my favorite romantic comedies that year, with witty dialogues and funny music videos from the 80's. And who doesn't love Hugh Grant? ^_^ ---(more about this movie here . WARNING: Contain spoilers!!!)
Below is the video I was talking about. This duo sing it pretty well.
And this is a cut from Music and Lyrics featuring the song during a concert towards the end of the movie.