*Spoilers* for The Flash Season 3, Episode 1 “Flashpoint” in this review and recap.
Well, Barry just had to learn the hard way (again) about getting involved with timelines.
After the events of the Season 2 finale, Barry is now in an alternate reality. His parents are alive and well, he gets a date with Iris, and everything this seems to be going great. From there things seem to go sour and, well, you know what happens.