With the game heading for a draw after Everton came back from two goals down to level the scoreline at 2-2, Liverpool's No.7 appeared to have clinched all three points in dramatic circumstances with the last kick of the game - but a linesman's flag for an incorrect offside decision saw joy turn to despair.
"It was an exciting encounter and I'm sure that was the same for the fans as well, but it was a shame we didn't get the three points," Allen told Liverpoolfc.com.
"Credit to Everton and the way they fought back, but we feel disappointed we didn't get the three points as we had a goal dubiously disallowed right at the end which would have given us the victory.
"It was mixed emotions for us at the end. It was a great feeling for a split second because we thought we had won the game, but it wasn't meant to be. Hopefully next time we will get the decision."