The swedish song in this movie ??? dont get it ??

Ok, can someone explain the relevance for the swedish song being in this movie ??
Vem vet by Lisa Ekdahl ??
Im Swedish and i dont get the "point" with this song being in this movie ??
Is it so that non swedes will think WTF when they hear this or what ??

Ive roughly translated the lyrics to english and this is the result:




You are a tale too good to be true.
It's a tale in itself that we've found one another.
We could just as easily never met, or was our meeting already set long before we were born?
Who knows? Not you. Who knows Not I.
We know nothing now, we know nothing today.
Who knows? Not you. Who knows Not I.
We know nothing now, we know nothing today.
Who knows? Not you. Who knows Not I.
We know nothing now, we know nothing today.
Who knows? Not you. Who knows Not I.
We know nothing now, we know nothing today.
You are a tale too good to be true.
It's a tale in itself that we've found one another.
We could just as easily never met, or was our meeting already set long before we were born?
Who knows? Not you. Who knows Not I.
We know nothing now, we know nothing today.