As reported last month, the actor's character Tyler Moon is to carry on pursuing McGarty's alter ego Whitney Dean in the coming weeks, causing a love triangle as Fatboy Chubb is also interested in her.
In an interview with New magazine, Discipline explained that he is excited to be working alongside McGarty, who has been with the soap since 2008.
He said: "It could be a lot worse! Shona's a lovely person and a great actress. And she's beautiful! There are loads of beautiful girls in EastEnders, aren't there?"
Tyler will feature in a more serious storyline next week as he ends up being seriously injured in a boxing match, as planned by his twisted half-brother Michael (Steve John Shepherd).
Viewers will see Tyler's loved ones learn that he has bleeding between his brain and his skull as he fights for life in hospital. In real life, Discipline has shaved off his hair for the plot.
Discussing his new look, the 22-year-old said: "I didn't mind, but it makes me look a lot younger. When I first had it done, I walked out of the make-up room and David Essex was p*ssing himself. He said, 'You look about ten years old, mate!'"
Discipline joined the cast of EastEnders earlier this year.
> EastEnders spoiler: Michael's shock scheme falls into place
> EastEnders spoiler: Tyler is seriously injured in the fight
> EastEnders spoiler: Tyler fights for his life in hospital
> EastEnders spoiler: Eddie shares all of his secrets with Michael
> EastEnders' Tyler will be in a bad way, warns Steve John Shepherd
> EastEnders' Tony Discipline wants Tyler relationship plot
> Read more EastEnders news and spoilers
Rewatch Tyler Moon's arrival on EastEnders in the video below: