A few caveats:
-The soul lock works best M-M or F-F but is not limited to that arrangement.
-It should be noted that upon achieving the soul lock both participants die because life is essentially meaningless after the spiritual, infinite joy of soul locking.
-The last recorded soul lock happened during the Han Dynasty in 100 B.C. China.
John: "No you didn't, you idiot. If you soul locked, you'd be dead."