Mark Wright has regretted telling his Heart FM listeners what he secretly calls his wife Michelle Keegan - and it's certainly a bizarre choice!MORE: Michelle Keegan poses in rare family photo with husband MarkAppearing on the radio waves this week, the 35-year-old was quizzed about the cute pet names they have for each other, in which he revealed he calls his love "treacle pant" in private.WATCH: Mark Wright and Michelle Keegan announce 'dream' news"Apparently the top names to call our partners are 'babe', I mean that's standard," he spilled. "Also 'sweetie' - nah that’s not me, 'honey bun', 'boo', 'handsome', 'princess'…"MORE: Michelle Keegan stuns in must-see behind-the-scenes snaps from Jess Wright's weddingSEE: Michelle Keegan and Mark Wright look loved-up in rare 'couple goals' photoThe former TOWIE star added: "I've thrown the odd princess out to my wife before, I'm not going to lie.