But now, the Australian actor has made an appearance on The Morning Show and let slip that he and the blonde beauty might get married!
Talking to Kylie Gillies and Larry Emdur, Sheridan said: 'Maybe one day we will get married, who knows?'
Hugh and Delta regularly fuel romance rumours by posting intimate photos to social media.
The Packed To The Rafters star let slip when Emdur cheekily interegated him, saying: 'We see photos...and we go 'Okay, put a ring on it, have kids, lets get this next chapter going.''
Hugh responded, 'We talked about it I just don't think so. I do love Delta, I love her so much, she is one of my dearest and best friends...but that doesn't necessarily mean that there is anything more than that.'
Hugh continued to gush over the singer though, adding: 'Any guy that snaps Delta up would be incredibly lucky. I'm sure she has a whole line. But look, maybe one day we will get married, who knows?'
'You never say never,' he continued with a cheeky smirk.