As you will know, "Jagiya" means "honey" which is commonly referred to one's significant other. In Ryeowook's case, he literally means his lover.

He was saying sorry to his future girlfriend/lover. It was cute cuz Ryeowook was saying stuff about how he's sorry that because he's a celebrity, he can't hold hands, go out freely, or express his love to a lot of people in public.

I'm not sure what Kangin was doing lol. And Kyu was saying sorry to his sister because she's abroad studying but whenever she calls long distance, he would just say, "Ok, ok, gotta go" because he feels tired or it's bothersome. But Kyuhyun said he loves his sister and is very sorry.