Liverpool appeared to be unstoppable just a couple of weeks ago.With the exception of a 5-0 defeat to Aston Villa in the Carabao Cup in December - a game in which none of Liverpool’s first-team players featured - the Reds hadn’t lost since September prior to their 1-0 defeat away at Atletico Madrid in the Champions League on February 18.Before that fixture, many were beginning to think that Jurgen Klopp’s side would end the season with the Premier League, Champions League and FA Cup - a historic treble.However, their hopes of winning all three major trophies died on Tuesday night after they were beaten 2-0 by Chelsea in the FA Cup fifth round at Stamford Bridge.That’s now three defeats in just four games for the Merseyside outfit, who are finally having something close to a blip.Although they bounced back from the Atletico defeat with a 3-2 victory over West Ham, they’ve since lost 3-0 to Watford and 2-0 to Chelsea in the space of three days.They will almost certainly still win the Premier League title - which means their season will have been a huge success regardless of what else happens - but the FA Cup is certainly a missed opportunity while beating Atletico in next week’s second leg will be far from straightforward.Arsenal fans were buoyant after Watford ensured Liverpool won’t end the Premier League season unbeaten last weekend - the ‘Invincibles’ record remains unequalled for another campaign - and it was Manchester United supporters’ turn to revel in a Liverpool defeat after the Reds’ treble dream went up in smoke.United fans have shown no mercy to their Liverpool counterparts on social media since the full-time whistle.Man Utd are still the only team to have won the Premier League, Champions League and FA Cup in the same season - and their fans have made that fact abundantly clear…

Savage.

Plenty has been made in recent weeks about whether this current Liverpool side is as good as - or is even better than - United’s legendary treble-winning side from 1999.

But while Liverpool have already amassed the same number of Premier League points (79) as Sir Alex Ferguson’s revered side in 12 fewer games, they will not be able to match United’s achievement, which looks more and more remarkable as the years go by.