Nope, it remains a mystery.
But knowing that it’s popped up in another tv show, maybe one day we’ll finally figure it out. I’m vaguely betting that it has something to do with licensing issues, but I’d still like to know the original artist.
Did you ever find out what song was playing in episode 2 of Valid Love with the lyrics It hurts the way you got me loving you. My world’s upside down and I’m scared of the truth? The song came on in an episode of Terrace House and when I googled the song lyrics your question from a while ago was the first link.
The Obsessive Dilettante 