The pair, who play Moon brothers Anthony and Tyler on the BBC soap, sparked speculation about their love lives earlier this month when they were spotted looking cosy with their colleagues at co-star John Partridge's wedding.
Lapinskas and Discipline were guests at Radio 1's Teen Awards yesterday and revealed that the recent press reports were true.
Asked by Yahoo whether he is dating McGarty (Whitney Dean), Lapinskas replied: "Yes."
Meanwhile, discussing his romance with Jossa (Lauren Branning), Discipline said: "It's early stages but it is true."
The pair, who joined EastEnders earlier this year, added that they are still adjusting to the media interest surrounding their personal lives.
Discipline explained: "It's completely different to what we're used to. People writing about your private life is strange and something we're getting used to."
EastEnders continues tonight at 8pm on BBC One.
> Read all the latest EastEnders news and spoilers
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