User blog comment:Jho5689/Fairy Tail 337 and onwards/@comment-11232389-20130625163146/@comment-1776824-20130625171253

I believe there's a fourth timeline we don't know about, making the order of events as follows:

First Timeline ---> Future Rogue's Timeline ---> Future Lucy's Timeline ---> Mixture of Future Rogue and Future Lucy's Timeline. (/._.)/