It seemed after a summer of looking elsewhere, Marouane Fellaini like the last single girl left at the bar at midnight - caught the eye of David Moyes - the ex.
Since his deadline day arrival, their relationship has not got off to the smoothest of starts. When taken around to visit the noisy neighbours, chaos ensued.
Since the 4-1 defeat in which Fellaini was expected to be the difference maker, the Belgian was a late substitute in the loss to West Brom, but was recalled for the visit to Ukraine, only the second Champions League match of his career so far.
Fellaini though lasted 66 minutes, substituted off after picking up a yellow card for veteran Ryan Giggs, but it perhaps should be noted that after he went off the home side established a bigger foothold in the game and scored an equaliser.
He was important for United in the air, for he was the only player barring Nemanja Vidic (5) to win more than one aerial duel, four in total.
His pass completion accuracy was 87 per cent, narrowly the second highest of any United midfielder - Michael Carrick the highest with 94 per cent. He certainly aimed to play it simple - with 33 of his 34 passes short, with just the one long ball completed from a single attempt.
Fellaini was though key in United's goal, driving forward and playing the pass into the box which Shakhtar made a mess of clearing before Danny Welbeck struck home.
Fellaini made just one tackle, and failed to make a single interception. He would make two clearances and block one shot however as he sought to do his defensive duties.
Perhaps most worrying though was the fact Fellaini was dispossessed five times - more than any other player on the pitch. His eight fouls committed was also the most of any player competing in any Champions League match on Wednesday evening.
It is going to be a learning experience for the new signing as he adapts to the new level, but United will clearly be keen for him to do so as quicly as possible. We have taken a look at what fans thought of his display via the medium of Twitter:
MUFC Fan (@praveensapkota) October 2, 2013
Fellaini is not even near the form he had when he was at Everton— EFC=Bliss (@RamsayPaula) October 2, 2013
The Fellaini that played against Utd looked far superior than the Fellaini playing for Utd. he is only young he will improve— The General (@k3nny18) October 2, 2013
Fellaini completed 34 of 39 passes, 87% completion. People overreact to every mistake. Everyone miss places passes. #chill— Scott Crossland (@ScottCrossland7) October 2, 2013
From what I have seen..I think our best midfield pairing is cleverly and Carrick. I don't think Fellaini realises he is playing for #MUFC— Senyo Sallah (@kriticalstorm) October 2, 2013
Fellaini gave the ball way too easily.That kept happening throughout the match.Phil Jones should've played instead.— Rishi (@GDebarshi) October 2, 2013
Fellaini aint a Manutd type of player...Fergie would never have bought him, not in a million years!— Denis Deogratias (@deogratias_91) October 2, 2013
For someone who was playing so poorly, Fellaini coming off has changed the game. Wide open down the middle.— Nooruddean (@BeardedGenius) October 2, 2013