Some have called him out for poor sportsmanship while others have been more sympathetic given how things unfolded for the Belgian.
After winning an early penalty to open the scoring from the spot, Lukaku missed a glorious one-on-one chance in the second half with the scores level at 2-2.
To make matters worse, he had the misfortune of prodding Diego Carlos’ overhead kick into his own net to hand Sevilla victory. No wonder he was distraught in the pulsating encounter’s aftermath.
However, there’s more to Lukaku’s misery than the misfortunes that befell him in this final.
Having joined Inter from Manchester United for a huge transfer fee in the summer, the pressure was on him to deliver and he responded with a scintillating first campaign at the San Siro.
Lukaku has led the line for Antonio Conte’s side admirably, emulating Ronaldo’s debut season tally of 34 goals in all competitions back in the 1997/98 season.
But from the heights of an outstandingly prolific season which also saw him score in every Europa game this season, and from drawing comparisons to ‘Fenomeno’ who also happens to be his idol, his part in Sevilla’s winner plunged him into despair.
It’s particularly unfortunate that the moment gave Twitter trolls plenty of ammunition against a player whose often inconsistent first touch has always been used as a stick to beat him with.
But what must haunt Lukaku most is that the events of this final sees him remain on the cusp of the truly elite