I think she is preparing a person who is leaving "Ride away gonna take me from my man". I think when she says "know you've always been the one" and "Know they'll never understand" she is prepping them for those around them that don't understand why the one she loves is leaving, they don't really get their relationship. She tells the one she loves to "Know you've always been the one" because she doesn't want him to forget her or her love. She knows that while he is gone they will be surrounded by people who are making further commitments in their relationships or doing the things the two of them are putting on hold so that he can do whatever it is he is doing "We'll have a bit of fun watching everyone pass us by"
I think she is preparing a person who is leaving "Ride away gonna take me from my man". I think when she says "know you've always been the one" and "Know they'll never understand" she is prepping them for those around them that don't understand why the one she loves is leaving, they don't really get their relationship. She tells the one she loves to "Know you've always been the one" because she doesn't want him to forget her or her love. She knows that while he is gone they will be surrounded by people who are making further commitments in their relationships or doing the things the two of them are putting on hold so that he can do whatever it is he is doing "We'll have a bit of fun watching everyone pass us by"