Trying to find a British group from the 1960's
 

I don't know the name of the band or the song that I heard. I randomly found it one time while on Youtube. I can't look at my history because it was so long ago and I don't think it was under my account. Anyway, all I know is that it was a young girl and boy (late teens), and they performed a song on a popular british tv show, just as their album was about to be released. Very soon after this live performance, however, the girl just disappeared. She didn't want the fame and stardom, and just ran away. The cd was never released, but in the late 90's or perhaps early 2000's the guy formed the group again, but with a different girl and they re-recorded the songs. There is a music video for the original hit, from the original band and it is basically them playing their music and dancing freely around a tree in a field. I realize this sounds ridiculous and farfetched that I will actually find this group, but if you have any ideas on who it could be then please let me know!