The love fest between Conor McGregor and Dustin Poirier going into and coming out of UFC 257 has come to end. 

McGregor and Poirier took their frustrations to social media on Sunday over what initially brought the goodwill from both guys: a $500,000 donation McGregor promised he'd make to Poirier's charity, The Good Fight Foundation.

It all started when McGregor said he'd knock out Poirier in the trilogy fight that is currently scheduled for UFC 264 on July 10. Then the former interim lightweight champion fired back at the Irishman.

McGregor — the first UFC fighter to become a dual champion, has been at the forefront in helping out various places around the world, including his home country of Ireland — shot back at Poirier that he needed information on what the money would be going for.  

Poirier doubled down on his earlier statement.  

McGregor let Poirier know him and his team do their due diligence on where money is going and proceeded to threaten Poirier for trying ruin his reputation.

McGregor was all fired up and told Poirier that the third fight is off and would "fight someone else on the 10th."

Poirier responded in jest, letting McGregor know he stopped him at UFC 257 to even the series at one after the latter won by first-round TKO at UFC 178.