JOE Allen insists Liverpool must learn their lesson after they let a two-goal lead slip to lose at Southampton on Sunday.
The two clubs both remain hopeful of qualifying for Europe and were neck and neck in the Barclays Premier League heading into a memorable contest at St Mary’s.
Having been lucky to escape conceding an early penalty, Liverpool dominated the first half and Philippe Coutinho and Daniel Sturridge scored within five minutes of each other.
But Ronald Koeman reacted by introducing Sadio Mane and Victor Wanyama at the interval and, after seeing his 49th-minute penalty saved, Mane hit a brace either side of a fine Graziano Pelle strike to seal a memorable 3-2 win.
Wales midfielder Allen had come close to adding a third on two occasions, seeing a good chance saved by Fraser Forster before having another strike ruled out for offside.
Jurgen Klopp’s Reds had won their last three league games heading into the contest but - after being well on top in the first half - Allen had no explanation for the second-half capitulation.
“I don’t quite know. I don’t know what to say really, but we are all very disappointed,” he told liverpoolfc.com.
“To be ahead like that and then throw it away is hugely disappointing.
“Our focus has been on the run, gaining that momentum and I thought for large spells it looked like we would keep that going, but to come away with nothing... we can’t look beyond that at the moment.
“We’ll make sure lessons are learned and for the rest of the season we’ll have to get that ball rolling and get some wins again.”
Both Klopp and Koeman admitted Liverpool had bossed the first half but that the second had belonged to the hosts - who moved up to seventh with the win and are now three points off fifth-placed West Ham.
Ahead of his 53rd birthday on Monday, Koeman streamed down the touchline to celebrate with Mane and his team-mates after his late winning goal - which came just three minutes after Pelle’s superb leveller.