X-Men days of future past clip
They were once friends, but now are the bitterest of enemies. In this new clip from "X-Men: Days of Future Past," it's clear that the relationship between Charles Xavier (James McAvoy) and Erik Lehnsherr (Michael Fassbender) is completely broken. For good.

As Wolverine (Hugh Jackman) watches on, the two men begin to argue. Charles has given up his powers so he can walk, and Erik retorts that he's suffered a loss, too. But Professor X accuses Magneto of taking all the things he cared most about.

"You abandoned me! You took her away and you abandoned me," he shouts, referring to Raven (Jennifer Lawrence). But perhaps the pot is calling the kettle black.

"X-Men: Days of Future Past" opens in theaters May 23.