Sat2Mon (2012) on Netflix

Chuad falls in love with Lew when he's seeing her passing by. He's able to take a job where Lew is working too to be close to her, but he doesn't know how to talk to her, so he's asking Lew's best friend Pen for advice. Suddenly when Chuad's grandmother is calling Chuad that she's having a heart disease and won't live for long and that's she would love to see Chuad with his new girlfriend (Chuad told her that he had a girlfriend while he was single). After making a deal with Pen, Pen was willing to go with him for 3 days to pretend to be his girlfriend to satisfy his grandmother, but there's growing something between Pen and Chuad.