Online Assistant

If you love someone,
Set her free...
If she comes back, she's yours,
If she doesn't, she never was....

Pessimist: 
If you love someone,
Set her free ............ .....
If she ever comes back, she's yours,
If she doesn't, as expected, she never was

Optimist:
If you love someone,
Set her free ............ .....
Don't worry, she will come back.

Suspicious:
If you love someone,
Set her free ............ .....
If she ever comes back, ask her why.

Playful:
If you love someone,
Set her free ............ .....
*If she comes back, and if you love her still, set her
Free again, repeat *

Bill Gates :
If you love someone,
Set her free,
If she comes back,
I think we can charge her for re-installation fees but
Tell her that she's also going to get an upgrade.

Finance expert :
If you love someone
Set her free
If she comes back, its time to look for fresh loans
If she doesn't, write her off as an asset gone bad.

[the same things are applicable for girls as well, just change "her" to "him" and "she" to "he"]