Verified answer

One of the songs is "Right Back Where We Started From" by Maxine Nightingale. This is the song played when they arrive in the limos and greet each other.

Wife Swap Usa

I think the one you are looking for is EVERLASTING LOVE. The original version was by Carl Carlton but there are others including one by Gloria Estefan.

I don't know, however "Torn between two lovers" would seem to also fit the category.