WATCH: Ewan McGregor and Danny Boyle discuss their complicated rift
All it takes is one fateful day or massive argument to ruin a life-long friendship.
If you're lucky, you've never experienced it, but sadly most of us have.
There's that one mate who you were incredibly tight with, someone who was like a brother to you, and for some reason, you fall out and then never sort it out.
Ewan McGregor and Danny Boyle are evidently very likeable guys. Not only do they both come across as extremely affable and charming, but their co-stars and colleagues describe them in glowing terms as good, decent, reasonable people.
So it perhaps comes as a surprise that these two old friends and collaborators didn't speak to each other for years after a falling out back in 1999. The pair discussed their rift on The Graham Norton Show whilst promoting T2 Trainspotting.
The breakdown in their relationship came as a result of Boyle not casting McGregor in The Beach, he opted for Leonardo DiCaprio instead.
You can watch the chat below, but what resonates the most is the fact that both men were desperate to patch things up in the subsequent years, but couldn't bring themselves to take that first step.
Thankfully they eventually made up and are stronger for it, but so often we don't. If you can relate to the situation and it brings to mind someone you wish you could patch things up with, perhaps it's a good time to pick up the phone or send that text.