On the series finale of the ITVBe show, she asked former boyfriend Arg to write a letter containing details of all the women he'd cheated on her with.
She said she needed the list in order to put the past to rest and move on.
Speaking to the TOWIE official website, she said: "I do think getting the list has helped me put it behind me and forget about things because all of the doubts and questions I had have finally been answered and I can finally move forward.
"And, to be fair, it wasn't as bad as I thought! Still bad though…"
At the end of the episode, we saw Lydia and Arg agreeing to give their relationship another go and vowing that this time it would be forever.
They've put the past behind them, with Lydia saying all her past problems with Arg happened when he was in his dark place fighting his demons. Now he's gone to rehab and has emerged healthier and happier than ever.
"I do think James has changed and he's back to the person he used to be before he turned into a crazy party animal," added Lydia.
"It's nice to see because he will still always be him, fun and good to be around. But now he's even better and nicer – he's just a much nicer, all round person."
Ten reasons we'd like to be in TOWIE:
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