Perrie made the comment on Total Access Radio after being asked about Little Mix’s breakup anthem ‘Hair’, which features the line "He was just a d*** and I knew it".
Explaining the lyric, Perrie’s bandmate Jade Thirlwall said: "Sometimes when you break up with someone they are that word, so it's alright to say in a song."
Perrie then quipped, referring to Zayn: "Yeah he is. He was just a bellend and I knew it."
The pair called time on their engagement in August, having first got together after meeting on ‘The X Factor’ in 2011, when Perrie was a contestant.
It was recently reported that she hasn’t wasted anytime in moving on from the former boybander though, as she was linked to Joey Essex.
The pair have reportedly enjoyed a string of secret dates after sharing a kiss at the Pride Of Britain Awards earlier this month.
“Perrie has just come out of a serious relationship and is enjoying having fun right now.”
Joey remained coy when quizzed about the rumours during an appearance on ‘Celebrity Juice’ last week.
When Caroline Flack asked where they met, he hit back: "Mate, I don't want to say where we met.
"It's not that I'm embarrassed. It's just none of your business, man."
Perrie's spokesperson previously denied she was dating Joey.