One recent Instagram image of the duo sent fans into a frenzy, with some claiming it indicated proof of an engagement.
'How'd you get that dirt on your shin and torn jeans around the knee on only one side?' one follower asked Jett.
'There's a reason she's hiding her left hand. Don't want people to know just yet,’ the star teased in response.
Jett’s DWTS co-star Michelle Bridges has also speculated on engagement rumours.
'Looks like an edgy bridal outfit to me,’ she said of Lily’s outfit.
And DWTS winner Samuel Johnson added: 'I'll be very pleased when you u ask me to be the godparent!'
It seems that Lisa has bigger things on her mind – including getting justice after it emerged that medal winners that came in ahead of her at the 1980 Olympics may have had illegal help. See her comments on that matter in the video below.
