One Direction's Zayn and Little Mix's Perrie - both former X Factor artists - became engaged earlier this month.
Speaking on ITV's Lorraine today, Marcus - who finished runner-up to Little Mix on the eighth series of X Factor - said: "I remember the first day they met, there was a certain spark then as well. She seems so happy, both of them do so I wish them all the best."
Perrie set tongues wagging about a possible engagement when she turned up at the One Direction movie premiere on 20 August sporting a large diamond ring on her engagement finger.
The following day the couple confirmed that Zayn had popped the question to his 'Wings' singer girlfriend the weekend before.
No doubt Marcus will be getting all the goss on how Zayn proposed soon as he told Lorraine he'll be meeting up with Perrie and band mates Jade Thirlwall, Leigh-Anne Pinnock and Jesy Nelson soon.
"They're just winning, they're great girls, they're all so lovely as well… I'll be catching up with them soon."
Marcus also had kind words for 1D, saying: "I think it's absolutely fantastic for five lads who didn't win X Factor. They've come from all different walks of life across this country and taken over the planet, they're global, everybody knows One Direction. Their success has just been something out of this world and they deserve everything because they are such nice guys, all of them are really down to earth."
More engaged couples in our gallery below!
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