Original version :

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

The New Versions.....

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:

(1) If you love someone, Set her free ...If she ever comes back, ask her why.

(2) If you love someone, Set her free ... but get someone to follow her

(3) If you love someone, are you sure you love that someone?

Go-getter:
If you love someone, Set her free ... If she comes back, she's yours, If she doesn't, go get her !

Hunter:
If you love someone, Set her free ... Don't even wait until she comes back, go hunt her down!

Impatient:
If you love someone, Set her free ... If she doesn't comes back within some time forget her.

Patient:
If you love someone, Set her free ... If she doesn't come back, continue to wait until she comes back

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

Posessive:
If you love someone, Set her free? NEVER!

Paranoid:
If you love someone, When you let her go, she'll be out to get you.

Fascist:
If you love someone, Set her free.. She WILL come back or be shot. She WILL be yours or be shot.

Old-Fashioned/Conservative:
If you love someone, Set her free, But only if chaperoned by her parents.

Animal-Rights Activist:
If you love someone, Set her free, In fact, all living creatures deserve to be free!!

Biologist :
If you love someone, Set her free, She'll evolve.

Statisticians :
If you love someone, Set her free, If she loves you, the probability of her coming back is high If she doesn't, your relation was improbable anyway.

Dental hygienist :
If you love someone, Set her free, She'll be back when the cavity strikes.

Shwarzenegger's fans
If you love someone, Set her free, SHE'LL BE BACK!

Weatherman :
If you love someone, Set her free, If she come back, it's back! If she doesn't... who cares!

Pathetic :
If you love someone, set her free, If she comes back, okay! >if she doesn't, how could she!

Sore-looser :
If you love someone, Let her go, If she comes back, dump her! If she doesn't, make up bad stories about her