But at Lizzie Cundy’s birthday party on Tuesday evening, the pair were spotted by Closer looking very friendly indeed, cosying up for pictures before following one another to the bar.
While it was unclear if the pair actually came together, they arrived within moments of one another, and even found time later in the evening for an intimate chat at a table.
In 2014, Casey was left red-faced when Blue singer Lee appeared to play her off against American actress Jasmine Waltz, first getting with Casey before setting his sights on Jasmine.
Her own mother famously told her she’d been ‘mugged off’ in the drama, but it seems Casey has learnt to forgive and forget following the incident.
As the pair partied the night away to celebrate Lizzie Cundy’s birthday as well as her role as presenter on Fubar radio, Casey looked noticeably demure in a spring pencil dress and pink clutch.
Lee kept things casual with jeans, a low neck tee and brown suede jacket, and sported some questionable facial hair too.
Could things be back on for this attractive pairing? Or are they just good pals?