He arrived at Jitters without a fuss and when he was about to ask where Iris is, she spotted him with Eddie in a corner. They were kissing. Iris was standing on between his legs while he sits on a high stool. He can back out. He's not into a vicinity where they can see him so he scrambled towards the door.
Outside, he took a deep breath and laughs a painful laugh. He realized that a loser will always be a loser. Iris will never be his. Never. Even on a different timeline, the thought of the two of them being together is impossible.
Barry was yanked out of his thoughts by a woman screaming. She was pointing into a speeding car followed by a police car. Without rational thinking, he run for the car himself and that's when he felt that all of the people around him blur. The wind around feels like it's never there and hey, he bumps the car and sent it catapulting into the air.
He stopped and look around if someone saw him. A lot of people was there but they never mentioned him so he creeps back and headed slowly into an alley and tried it. It worked. He has superpowers and he'll do it to save the world. Period. Then Caitlin's reminder echo in his head. Yeah he should be back and tell them what happened. It might ease his mind also, so that's what he did. He goes back to Star Labs as normal as possible.