I kind of agree with the open relationship part, but I think she will to repective place with Sayn and leech to have sex instead of in the camera apartment. She seems to blow off Sayn all the time, but moved some cloths and things to Sayn apparently new place, why do this, if not to have a change of cloths after spending the night. Leech maybe watching the camera and is angry when she flirts or engages with Sayn, and she maybe worried that the lie about just being friends with leech may come out if he comes over. What ever happens I feel a lot of eye rolls happening in the future.