If you study this case closely you can see what’s going on. At the first glance it looks like the bride and groom have popped through a portal near the base of the cake to appear at the top.
Is that really what happened? Why do neither of them have a portal gun? That piece of portal generating power happens to be beside the Companion Cube. If you ask me that Companion Cube looks a little guilty. I think she opened the portal so the newly weds could dive in together.
Via Geeks are Sexy. No lie.