I missed a bit, plse help
First of all she's with Peter, then later on she's with the other guy all loved up. Then she has it off with Peter and the other guy goes mental.
How did she swap from peter to the other guy in the first place?
Peter went off to Barcelona, but Jule couldn't go with him due to money worries. Jan, who had a crush on her, helped renovate her apartment before she had to leave it. She disclosed to him in confidence that she had an accident with her Golf, hitting Hardenberg's Mercedez Benz.
When they broke into Hardenberg's house and were in the pool she discovered the photos he took of her from their renovating and the thrill of the moment led to them kissing. However, Jan went off to the bathroom to gather his thoughts as he didn't want to destroy his friendship with Peter. They later returned to the house to retrieve her phone and Hardenberg caught them.
While they were at the cabin with Hardenberg, Peter discovered the photo of Jule in Jan's jacket. Hardenberg mentioned their free love and how he used to be that way, which confused Peter. While Jan and Jule were out picking up supplies, Hardenberg told him about the true nature of their relationship, which led to Peter confronting them and going out all night drinking. However, he and Jan later made up.
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Damon - "It's an adorable exploding kitten"