Should You Attend an Ex's Wedding? Prince William Thinks So...

Prince William attended the wedding of his first girlfriend, Jessica “Jecca” Craig, and her now-husband Jonathan Baillie. And the wedding was in Kenya. And Kate wasn't there.

So, while this story isn't actually that scandalous – William and Jecca have been friends for years – it does beg an interesting question of whether or not it's acceptable to attend an ex's big day.

Personally, we say if your ex wants to invite you and you actually want to go, then you most definitely should. Just because you have a past with this person doesn't mean you can't celebrate his or her future. Still don't think it's possible to stay friends? Here are a few other celebs who have remained close with their ex post-breakup:

 1. Gwyneth Paltrow and Chris Martin. 

These two have totally set the stage for exes being friends. Since Chris and Gwyneth have children together, they've agreed to be amicable towards each other. While neither has remarried, they've each been supportive of the other's relationships.

Kate and Matthew called off their engagement after nearly three years, but share a son together. The pair has an extremely open friendship and even go on vacations together. 

Bruce and Demi were married for almost 13 years and when Demi got tied the knot with Ashton Kutcher, Bruce was even invited to the "I dos."