Song Question...

In several episodes there is a song which is played and one of the lines goes something like this "Can you feel the fire between us, let it burn" or something to that effect. It is played in the laundry eps (If that makes any sense?) as well as a few other episodes and I don't think it is the song "Is it all my head?" or couse it might be I am terrible with lyrics.. (As well as spelling and grammer)...

Thank you :)