Sorry it's been a while. We're getting closer to the end here, maybe two more chapters after this, so I hope you enjoy.

Central City

Night

Barry was on patrol when he felt his hair stand on end. He looked up and saw the vibrating form of The Reverse Flash. He took off at high speed and Barry was right on his heels. They went on a chase throughout the city until they ended up in an alley way.

"You're gonna pay for what you did!" Barry snarled.

"That is one option," Thawne said, his voice vibrating, "But I have an alternative."

"Nothing you do will ever make up for what you did!" Barry roared before he lunged at Thawne.

However, Barry quickly found himself pinned to the wall; Thawne's holding them with one hand on his back and the other on his neck.

"I could kill you, right here where you stand," Thawne snarled in his ear, "but I'm not going to. Because we need each other. I am going to let you go and we are going to talk. Okay?"

"Fine." Barry snarled, realizing he had no other option.

Thawne nodded and let him go. Barry turned around, facing Thawne as he stopped vibrating and removed the cowl from his head.

"What do you want Thawne? That is your name, Eobard Thawne?" Barry asked and Thawne smirked.

"Since the day I was born. But that's not what you want to ask, is it? Go ahead Barry, ask it." Thawne egged him on and Barry clenched is fists at his sides.

"Why did you kill my mother?" Barry said in a growled that would have made Oliver Queen proud.

"Because I hate you," Thawne declared, "Not you now, you years from now."

"In the future." Barry noted.

"In a future, "Thawne corrected, "We're enemies, rivals, opposites. Reverses of one another."

"Why? Why were we enemies?" Barry demanded.

"It doesn't matter, not anymore. What matters is neither of us could defeat the other. Until I learned your secret. I learned your name: Barry. Allen. And finally, I knew how to defeat you once and for all: Travel back in time, kill you as a child," Thawne made a gestured with his hands like a knife being used, "wipe you from the face of the earth. But then you, future you that is, followed me back and we fought. We both landed a few solid shots and then you, future you, got your younger self out of there. I was sooo mad! But then I thought 'what if you were to suffer a tragedy? What if you were to suffer something so horrible, so traumatic you would never recover?' Then you would never become The Flash."

"So you killed y mother." Barry said in a growl and Thawne nodded.

"I killed Nora," He agreed, "Then I was free, finally able to return to a future without The Flash, only to realize in traveling back, I lost my way home. Lost my ability to harness the Speed Force. And without it, I was stuck here. Stranded in this time and the only way back was The Flash. But The Flash was gone and so I created him."

"Why train me!? Why help me save so many people?!" Barry demanded.

"Because I needed you to get fast!" Thawne hissed. "Fast enough to rupture the space-time barrier and create a stable worm hole so that I could return home!"

"I will never do that! Never!" Barry snarled and Thawne laughed.

"Oh, but you will. In fact, you'll beg me to help you." Thawne said confidently.

"And who would I ever do that?" Barry demanded.

"Because, like I said, we need each other. You help me get home, and I'll help you get what you want," Thawne took a few steps closer to Barry as he spoke, "The way through which I will return Home is by you going back to that night: The night I killed your mother."

"What?" Barry asked stunned ad Thawne chuckled.

"You can go back in time, you can save her. You can prevent your father from going to prison. And when you do, you'll therefore save all those I have killed in this time: Your mother, Cisco, the real Harrison Wells. You'll save all of them Barry. So what's it gonna be Barry?" Thawne demanded as Barry stood, silently processing this news.

For someone so smart, Thawne is an idiot. He got his powers only because of his obsession with The Flash. He doesn't consider the possibility he'll lose his powers if he stops Barry from becoming The Flash? Like I said, idiot.

If Barry seems more emotional and hostile here than in canon, that is intentional. The loss of his mother has more or less healed, it left a scar but a scar is a healed wound. The loss of Cisco is still very much an open wound, so Barry is emotionally compromised, more so than he was in the show.