The Diary spotted the smitten couple of over three years looking closer than ever as they enjoyed an evening out at Harcourt Street nightclub Krystle over the weekend.
Danny (30) treated the Lithuanian beauty to a romantic dinner at a nearby restaurant before they retired to the celebrity hotspot to enjoy a few drinks with a group of friends.
The high-profile couple, who met on the set of The Script's first music video, were led straight to the exclusive club's VIP suite and remained close by each other's side throughout the evening.
Fresh from a hectic tour of Australia, Hong Kong and the United States, Danny was clearly delighted to be spending some quality time with his other half.
The down-to-earth couple even took to the floor to show off their dancing skills alongside other guests, including Daniella Moyles and Karena Graham, when the club's Daft Punk tribute act took to the stage.
"Danny and Irma were definitely a couple very much in love," an insider said.
"They were inseparable all night and were thrilled to be back together after being apart for the last few months.
"They thought the whole story about them breaking up recently was very funny.
"They're looking forward to spending more time together for the next while as The Script have a few festival gigs coming up in Ireland and the UK," they added.
Fans can look forward to seeing Danny and his bandmates take to the stage at BBC Radio 1's Big Weekend on May 15 alongside Lady Gaga, My Chemical Romance and Taoi Cruz, among others.
The talented trio have also signed up to take part in the Isle of Wight Festival in June, as well as a sell-out gig here at the Aviva on July 2, before they head to Punchestown for this year's Oxegen Festival.
First Option model Irma, meanwhile, has been busy focusing on her acting career and has just landed a part in the upcoming flick Callback Queen.
The mum of one will be showing off her acting skills in the romantic comedy, which is due to be shot in London over the next two months.
Irma's much-anticipated first film follows the exploits of Kate Loughlin, played by Dublin actress Amy Joyce Hastings, who is an ambitious but unlucky actress on the verge of getting her big break.