Barry did the obvious when faces with a changed world. He looked up history using superspeed, gathering the information quickly. There were much more changes. One was the new heroes and group of heroes, most out of New York. The Avengers, the Fantastic Four, the X-men. Then heroes like Captain America and Spider-man, with Captain America being part of the Justice Society where he was friends with Jay and Alan.
Then there was the fact in the previous universe villains tended to be more males then females, maybe 90% male and 10% female. That was reversed with closer to 95% female now, with formerly male villains now female. Females were more numerous in every place, save with the various hero teams. So now the Rogues were all female under the command of Leona "Captain Cold" Snart, who seemed to have a flirty relationship with Barry. Battle of the Rogues tended to end in orgies.
There was also the fact of the love lives of heroes like Barry. Due to their rarity, male supers tended to have harems. And with more males being heroes then villains, many female villains 'left' the life for their hero. Most women now seemed to be bisexual and with large libidoes. With Barry's love life, his wife Iris was now African American with speedforce powers. Then there was his wife Caitlin Snow, who had Cryokinetic powers to allow her to be called Permafrost. And those were just the two he read before he stopped.
Because he got flashes of memories of the double marriage he had with the two. As well as being at other weddings, like those of his friend the President... Bruce Wayne. It made him realize, "I'm becoming part of the timeline. The longer I stay, the more apart of it I become. The best I could hope for is a minor remberance of the past."
It also helped he got flashes of a woman in a red cloak with purple hair and red slash marks on her face. Of something about merging... then a 'Shit'. Also something about the Reverse Flash growing boobs. Followed by many memories of a female Reverse Flash Thawne getting into hate fucks.
"Okay. So I have the chocie of going back and fixing things... and making things worse. Or accepting the reality I have now... which is weird and sexual but not too bad." Thinking of the obvious, he sighed defeated. He continued, "Might as well get use to this world. Also I have a letter to deliver to Bruce."