Jürgen Klopp's side fell two goals behind in the first half at PSG as Juan Bernat and then Neymar pounced on opportunities for the Ligue 1 outfit.
"I expect Liverpool to win the game, whether they can win by two goals - that's what makes it more hard".
Understandably given the high stakes, PSG sat back more and more in the second half, although they still came closest to scoring again from a Marquinhos header, and their win was fully deserved.
There were six bookings for the visitors with Liverpool also dismayed that Marco Verratti was not sent off...
Klopp was incensed by the "behaviour" of Les Parisiens and their on-field antics as they rode out 2-1 winners throughout Liverpool's loss which now leaves them in the precarious position of having to beat Napoli by a 1-0 scoreline or at least two goals at Anfield.
PSG knew a defeat here coupled with an unfavourable result in the night's other Group C game could see the ambitious Qatar-owned club eliminated already, which would amount to little short of a catastrophe for them.
The Reds were beaten in Paris on Wednesday after Neymar and Kylian Mbappe turned on the style for PSG in a 2-1 win.More news: Chinese scientist He Jiankui defends 'world's first gene-edited babies'
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The experience of Thiago Silva at the back for PSG was vital, as the Brazil global was as solid as can for the Parisian club all evening.
Liverpool protested that Verratti should have been dismissed for a bad foul on Gomez, but the Italy worldwide dominated midfield with a classy display.
Despite the threat of dropping into the Europa League, Milner said that the prospect of playing in UEFA's Thursday night competition has not even been mentioned at Anfield.
There was a lack of urgency all over the field from Jurgen Klopp's side, compared to their French counterparts, with their defending leaving a lot to be desired, while their was no fluidity or genuine threat in the attacking third, as the PSG goal was rarely troubled over the course of the game.
Virgil Van Dijk was colourfully blunt in his call for perspective.
Here's how to watch PSG versus Liverpool online. I think in the second half we did it better. If you are 1-0 down then don't commit 10 fouls in the next 10 minutes.
Liverpool fans will only hope they manage to claw their way into the Champions League last 16 and exact revenge at some point.