Once We Get Married Episode 17

On the night of Xi Xi’s birthday, she and Si Chen start the evening by meeting with Zi Xin and Xi Wei, respectively, to make it clear that they don’t have romantic feelings towards them. The night ends with Xi Xi and Si Chen sharing their mutual affection for each other. They take their relationship to the next level despite constant interference from Xi Wei and Zi Xin. (Source: frankly at kisskh)