When Barry woke up, he immediately felt miserable.

He looked at the warm body next to his, and felt even worse as he remembered.

He had cheated on Ollie.

He immediately scooted away from her, and he ran out of the apartment.

...

He knew that it was his fault, but he couldn't help but try to blame Kara.

He felt tears sting his eyes, and he prayed the guilt wouldn't compel him to tell Ollie.

It would break his heart.

...

When Kara woke up, she noticed the lack of Barry next to her, and immediately felt disappointed.

She had known Barry wouldn't do a repeat, but she didn't expect it to hurt this much. She felt tears, and she longed for the presence of Barry.

...

A few days later...

...

Oliver was suspicious. Barry never spent more than two days without contacting him, and he always gave Oliver warning before that happened.

It had been almost a week.

What had happened?

...

Over the next week, both Kara and Oliver started to notice small changes in Barry.

When Barry talked to Oliver, he didn't sound as happy has he had.

If anything, he sounded upset, but anytime Oliver would ask, Barry would completely deny it.

Kara lived with him, and she noticed Barry stopped cleaning up after himself. Since she was a nice person by nature, and she lived there too, she would help, but still.

And, for some odd reason, he kept rewatching Singin' the Rain. (Did I spell that right?)

They were both becoming increasingly nervous, and they wondered what had happened.

...

Then Kara realized it.

He had cheated on Oliver, and not telling him was dragging him down.

So, she decided to tell Oliver. Maybe that would help.

God, she really hoped so.

...

Now, Barry would never admit it out loud, but the reason he was feeling so guilty was because he had realized that he had liked Kara.

No. Loved her.

And that scared him.

...

"Ollie?" Kara asked, which made Oliver jump. She chuckled. "Sorry," she said, and thankfully Oliver didn't jump that time.

"Hello, Kara," he said, and she definitely noticed the confusion in his voice.

"I just wanted to tell you why Barry's been acting so distant," she said, and she looked at her shoes because she couldn't look the attractive man in the eyes.

Wait. Attractive? No way. She wasn't going to cheat with both of them.

Oliver immediately became more interested.

"What? Why? Did I do something? Did he?" Oliver started to fire off those questions, and Kara started to become nervous. What if he hit her? Those hands look like they could hurt...

Kara. Stop, she told herself, desperately. She couldn't think like that. It had already caused her to let Barry cheat, she couldn't do that to Oliver.

She wouldn't.

Or so she desperately hoped.

...

Harrison watched. Kara was about to destroy Barry's relationship, and he couldn't be happier.

...

The other man watched the shock play on 'Ollie's' face, and he felt like this was only the first step in getting revenge.

After all, Adrain Chase knew that his father had died by the Green Arrow's hand, so he would destroy Oliver's soul in return.