South Korean actor Kwak Si-yang and Jiae from the K-pop group Lovelyz will be tying the knot on Nov 28. Si-yang's agency 9ato Entertainment said on Thursday (Sept 3): "The two have decided to spend their future together based on their deep trust and love for each other." Jiae's KPlus Holdings agency also announced the news with a similar statement. The couple have reportedly been dating for about a year, and the wedding is said to be held privately with only their loved ones in attendance. They also posted handwritten letters on their individual Instagram accounts. Si-yang, who has starred in K-dramas such as Oh My Ghost (2015), Fight…