He didn't see it coming.

Felicity seemed to glow. Her hair was fixed and, even tho her outfit wasn't as glamorous as some he's had the pleasure of seeing her wore, she looked stunning. And the way she was laughing, man... It could light up the entire town.

Oliver had never seen her so carefree, young and... Pretty. Yes, of course he had noticed she was a pretty woman but, right now, she looked prettier than ever.

Date-Felicity was very different from Work-Felicity, who was also different from Foundry-Felicity. But all of them made him smile.

When the other guy sat in the table with her, tho, bringing two bottles of beer, Oliver's smile vanished. He twisted uncomfortably in his spot on that roof, on the other side of the street. How didn't he see it coming?

And, now that he was thinking about it, he should have predicted something like that, because, Oliver realized, he was indirectly responsible for that.

He was to one who handed Felicity over to detective Lance. So, it was kinda his fault that Laurel's father showed up at Queen Consolidated one day, asking for the help of Miss Smoak's abilities to analyze a sample in the CSI's lab. Which meant is was also kinda his fault that she met Barry Allen there.

But accepting going on a date with the guy? He blamed it on Felicity's constant - and sometimes very annoying - faith in people. Girl had an historic of trusting too easyly in strangers.

He lifted a brow when, once again, Felicity started laughing. She hadn't had a single sip from her beer yet, so he was sure her laugh was not alcohol induced. She was just having fun - plain, simple fun. Realization sunk in that he had never seen her laugh. Smile, yeah, sometimes, and even some nervous laughing, but never that kind of laugh she was giving the guy. Never had he ever saw her having fun, and it made him frown so hard his face hurt.

"You're a very easy target sitting over there" he heard a voice from his back, and already had an arrow tucked in before he recognized it.

"Digs. What..?"

"I saw you from the Big Belly's window, all the way across the street, Oliver. Anyone could have seen you sitting on the edge of this building. Why are you being so reckless?"

He walked to the point on the roof that Oliver had just abandoned, and looked down.

"Is that Felicity?" John sighed "You spying on her now?!"

"Just wanted to make sure she's alright..."

"I spotted you here half an hour ago. What, you couldn't decide if she was alright? Cause" Diggle turned around to glaze in Felicity's direction "she looks quite well to me."

Without replying, Oliver turned to leave. Diggle took two large steps and held his arm, keeping him in place.

"Look, man, we both know that all it takes is one word, one single phone call from you - maybe even a text - and Felicity'd dump that guy right on. Why you keep doing this to yourself? You have 'jealous' all over your face, Oliver." Sighing, Diggle let go of Oliver. "Geez, just tell her how you feel instead of stalking her every date and clenching your jaw like that, dude. It might break..."

Oliver pulled his hood down, brushing his hand over his face.

"How would I..." He sighed, and walked over to the edge again. "Just look at her. Have you ever seen Felicity so happy? Have you ever seen her smiling and laughing and flirting like that? Cause I haven't" He turned to face the other man. "All I have to offer is angst. Scars and bruises, and putting her life in the line every other day and... Look, I know how she feels about me. But I can't. It isn't fair. I can't ask her to let go of that" he pointed on Felicity's direction. "I can't"

"You would be good to her, man. You both would be good for each other."

Oliver walked out of the roof. Reaching the stairs, he looked back, smiling sadly.

"Maybe someday."