Three way marriage

We all know that senior class assignment, when they pair up two students to pretend to be a marry couple. Well that's what Sakura's, Tomoyo's and Syaroan's class is doing. Expect there is one problem, the class is a odd number. So that means three students had to be paired up with each other and those students are none other then Syaoran, Sakura and Tomoyo. So let see how those three held being married together.