One might possibly be wondering what happened to Fred after the wedding incident. The short version is that he did indeed pick up his life where he had left it, as several other people who had Returned put it, but that could probably mean anything by now. The long version, which is a lot more complex but basically the same story, is as follows.
The wedding incident, as it was always referred to later on, made the front page of the Prophet the next day. The concept of returning from death has long been a favorite of the Department of Mysteries, and it seemed that half of the said department swarmed the house over the next few days, trying to make sense of things. It got worse, if anything, after Luna Lovegood went public with her unusual prediction. Since nobody could find her, they kept swarming the Johnstons' house, and Fred became very peeved at answering the same questions for the thirty-eighth time.
At least some things had stayed the same over the missing five years of his life (he had aged, as if he had been alive, but it was like he had never lived those years). Angelina had nearly died of shock when she watched him turn wedding decorations into an obstacle course, but she was back to normal and, more importantly, still loved him. He hadn't been surprised to see that most of his siblings were married off; Ron and Ginny had been in relationships since before he'd died and Percy had always been the determined type when it came to that sort of thing. In short, he decided that his Return had the added bonus of perfect timing.
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A/N: This chapter's just a short explanation of what's happened to Fred since Chapter Four. Everyone who read my little teaser in the last chapter – that's been held off till the next one. Reviews are always welcome, especially with this chapter.