The 25-year-old tattooed Londoner arrived on the MTV show on Tuesday night's episode, surprising Helen on the beach. A good surprise, though, as she was over the moon to see him.
Now, he's given a bit more background on his romance with Helen in a video on MTV.co.uk, saying it was a mutual decision to part ways but neither really wanted to.
"We got together through a mutual friend up North. She liked me on Twitter. She's the first girl I ever text as I saw her on Instagram and thought she was well hot," he said.
"We decided to break up as she was going to Ibiza for six weeks and I was going to Ibiza for two weeks and I thought, she's too good to cheat on. We both decided to end it there but didn't want to. There's unfinished business. I know she loves me, anyway."
We're also guessing Helen wasn't one of the "psycho" exes Chet didn't mention by name.
"All the girls turn out to be psycho," he lamented. "A few times they've turned up to my door, banged the door down and stuff. I play it cool."
EOTB continues Tuesday at 10pm on MTV.