I'm not too sure but I suspected the same, they seemed to be hanging out a lot after Jack's most recent breakup with Hazel. I think an awful lot of youtubers have hooked up with each other over the years. Hannah Witton has said things to that effect in a few videos, that lots of them have slept with each other. I'd say those YouTube conventions are wild
Sure I think Mel's epic love story with Jack was basically just a few shags at Vidcon in LA and Summer in the City in London
He never even came to Dublin to see her! I still can't believe that bizarre rant she put on Facebook over someone she was never even officially dating. She's so weirdly obsessed with them still, like she commented on a recent picture of them on Hazels instagram. If she was so heartbroken and betrayed you'd think she'd unfollow and ignore both of them and move on with her life.