Let's look at it in a different way. The other guy has pinched her off you, BUT he will have to work very hard to PLEASE HER or he will be cucked much quicker than you were.
You fucked your wife a lot of times, and finally she grew the wings to try other cocks and soar with the Eagles. You got her started !!!!!!!11
Never lose sight of this gift you have given her of raising her self-esteem, making her feel that she could enjoy other cocks (bet her mom did not encourage her).
Yes Custer is right, divorce sets you free physically, but "to death do us part" in your mind will always remain.
You have touched every inch of her body, so you can not be free emotionally, and if you meet other cuckoldresses, you will not be able to stop yourself comparing them with your ex-wife. A small part of you will always wish you were back with her, even if she remains in your dreams.
Time will tell whether the new guy can tame her into his way of thinking, or whether he gets a teasing by her family. She is certain to want to enjoy her wanton, lustful new lifestyle with any man she gets her hooks into. She can't change her spots, and she won't want "vanilla" again - I reckon she is stuck in the cucking game (and you might easily get the opportunity to discover that the new guy has no higher status than her new "toyboy". You could easily still get the satisfaction of the last laugh.
Open yourself up to the possibility that your life is now beginning a new chapter, and take what you have learned along the highway to the new life that awaits you. Let go of the bitterness of a divorce or it will continue to bite your ass day after day as you keep thinking of what you have lost. A new woman wants to spend her future with you, and talking about the "hurts of the past will piss her off crazy". Let the past blow away in the wind, YOUR TIME IS NOW, YOUR POINT OF POWER IS NOW, CREATE YOUR NEW LIFE NOW and do not be like Lot's wife and look back at the old life you are wishing to let go of.
Give your energy and focus to what you want for yourself from this moment on, and the Law of Attraction will serve it up in your silver tray when you least expect it, and when you need it.