He might regret not having
stayed with his current girlfriend.

Ok I'm splitting hairs but I've got nothing better to do.
( Undulating Tentacles of Love getting fun down to acceptable levels, Thu 14 Apr 2005, 14:22, archived)

Staying with his current gf will not involve actively doing anything,
while splitting up with her to shag other girls certainly will.
( Mr. Tea 'ulmmm'/'mmneurgh', Thu 14 Apr 2005, 14:24, archived)

"will not involve actively doing anything"
I think that's the crux of the problem!
( Undulating Tentacles of Love getting fun down to acceptable levels, Thu 14 Apr 2005, 14:34, archived)