The fashion designer couldn't help but cry after Arg delivered a heartfelt apology over how he'd treated her in the past and said he was now out of his dark place and moving on.
Arg is back on the show following a period of suspension when excessive partying got out of control. He went to rehab over Christmas to clean up his behaviour and now looks happier and healthier than ever.
He paid Gemma a surprise visit on last night's episode, gifting her with flowers and saying he wanted to make amends for past wrongs.
Arg said: "I feel you're one of the main people I hurt. I'm here because I want to make amends and say how sorry I am. I think when I was going through the start of my dark phase, it started before we started seeing each other.
"When I was in a bad place you showed me so much love and attention and affection. I know how much you loved me and cared about me. I needed someone to look after me. I feel I took advantage of how much you loved and cared about me.
"My selfishness and actions obviously had a big effect on you. Looking back on it now I should have kept you there as a good friend. I shouldn't have played with your emotions, given you mixed signals and strung you along. I hope you forgive me and understand."
Gemma began to cry but as Arg leaned over to hug her she assured him they were tears of happiness.
"I'm crying because I'm happy for you, that you're in this place. You've made my day."
After the show aired, Arg took to Twitter to described Gemma as a "friend for life."
Recap the last series of TOWIE in less than 3 minutes!
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