ABBA's eldest member, 79-year-old Björn Ulvaeus, has opened up about his initial "troubled" feelings regarding the significant 28-year age gap with his 52-year-old wife Christina Sas.

Björn tied the knot with Christina last year, having first crossed paths in 2021 during the production of ABBA's latest album, 'Voyage'. The lavish wedding was Björn's third walk down the aisle, coming after his split from Lena Kallersjo, his spouse of 42 years, in 2022.

The intimate nuptials, attended by 130 guests, were presided over by comedian Sandi Toksvig. Reflecting on the event, Toksvig shared with the Sunday Times: "Christina, his new wife, is Danish, and I was able to conduct the service with some Danish, some Swedish and some English."

Yet, when probed about whether ABBA's Agnetha Fältskog and Anni-Frid Lyngstad were present, Toksvig succinctly responded: "No."

Eight months into his marriage, Björn candidly discussed his relationship with The Times, confessing it was "love at first sight" upon meeting Christina in 2021, despite being married at the time.

He admitted to experiencing considerable inner conflict due to their age disparity, stating: "Immediately, I had severe problems with myself and the age difference."

He pondered the moral implications, questioning, "When a man or a woman meets someone much younger and falls in love they think, 'Am I doing the right thing?'"

Ultimately, Björn conceded that he "just gave up" on letting the age gap concern him.

The musician acknowledged Christina's choice: "I decided, 'It's up to her – if she wants to live with someone older and we love each other...'

"Age doesn't come between us now – we rarely even talk about it."

Despite approaching his 80th birthday, the star is relishing his new marital bliss, whilst his holographic alter ego performs at ABBA's 'Voyage' virtual residency projected to run until 2029.

However, Björn tempered expectations in his interview warning: "That remains to be seen. We are allowed to stay in our current venue till 2029, but ticket sales might drop, you never know."

The group could face tough decisions if faced with a loss, as he highlighted: "But is it right to continue when someone is dead? That's a big ethical question."