The Red Devils emerged victorious at Old Trafford, thanks in a big part to two-goal hero Marcus Rashford and a solid defensive performance in the second half.
United deserved their lead at half-time, with Rashford belting home two early goals to make it 2-0 before the break.
An Eric Bailly own goal made it even more difficult for United as Liverpool dominated the ball in an attempt to get back into the game.
But Mourinho’s men did enough to get the victory – and he doesn’t care if people think United didn’t deserve to win.
#MUFC boss Jose Mourinho:
"If people don't think we deserved it, I don't care."@BBCRMsport
— ᗷIᒪᒪ ᖇIᑕᕮ 🎙📻 (@billrice23) March 10, 2018
Mourinho does not care what you think. No, really he doesn’t. pic.twitter.com/XRm4n3F1SJ
— The Peoples Person (@PeoplesPerson_) March 10, 2018
He said, per Sky: “We can split the first half, United half, second half, Liverpool half. Our first half was goals and danger. I don’t know what happens if Mata scores that fantastic goal.
“In the second half, it was Liverpool controlling by having the ball, United controlling not having the ball. I don’t remember David making a save. Even after 2-1, our team was always in control. Our full-backs defended very well.
“It was a complete performance by us. Even if people think we don’t deserve I don’t care. Three points!
“If it goes wrong (Rashford) people will say wrong decision. I’m tired, I have a match on Tuesday, we won and I don’t care what people say. I’m sure.”
United are now five points ahead of Liverpool in second in the English Premier League table and have control of that position heading into the run-in.
As for Jurgen Klopp’s side, they’re two points ahead of fourth-placed Tottenham, but Spurs do have a game in hand still to play.