Is there a standard period of time that one must mourn a failed relationship before moving on? How long should it be before it is considered acceptable and not "cheating" on ur ex?

Well, i had just heard from a friend that his ex girlfriend has already "moved on" and they have just broke up barely 2 months ago. The girl is already thinking of marriage and he was shocked. He was the one that initiated the breakup so this turnabout of events is totally unexpected.

"It is not like i expect her to still hold a candle for me, but it has been barely 2 months!"

I was flabbergasted but didn't really know what to say as both parties are my friends. Fate plays a big part in everything and i guess it is kinda his loss for not appreciating her when she is around. I guess only time will tell.
But one thing was, she said for the first time she felt taken care of.

It is always a blessing to be loved by someone, so for those of u out there with that special person, hold on and don't let go.