Former Hollyoaks actress Stephanie, 22, fell for Irish model Jeremy, 25, in the house, despite having a model boyfriend, Sam Reece, in the outside world.
That led to rows with Gemma, who initially said Stephanie's behaviour was a "disgrace".
She then had a U-Turn, telling Steph to follow her heart.
Speaking on Bit On The Side last night after her eviction, Gemma said: "It was tense at times but we massively sorted things out and she's been on her own personal journey in the house. It hasn't been easy for the girl. She has a boyfriend and fell in love with Jeremy.
"I'm behind her 100 per cent."
Host Rylan Clark-Neal then asked Gemma to clarify: does that mean she's totally supportive of Stephanie and Jeremy, despite not being at the start?
"You kind of feel sorry for her," said Gemma. "She's very young and we all have to grow up in life. She's so talented, she's an amazing singer, a good looking girl. And I believe you have to follow your heart in life. If her heart is with Jeremy...
"She wasn't happy in her relationship before, once she sat down and explained it to me and Danniella, we were behind her 100 per cent. Girls have to stick together so good luck to her.
"Please invite me to the wedding!"