The Instagram account is seen replying in the message: "That's insanely stunning news".
It would certainly explain the level of disdain the duo have towards each other and considering it's a season known for cheating we can't say we'd be surprised if these two had done the dirty.
Wanting to go straight to the source, MAFS Funny Instagram messaged Jess directly and asked her about the rumours.
As you can see below, the 'cheater' strongly denies the claims.
"As if", the Perth administrative assistant wrote, "That would be like one of my young girlfriends sleeping with someone my dad's age".