It's season 4. Felicity was kidnapped by her dad in 4x09. She comes back at a time of your choosing and Oliver reacts.
It had been twelve days, eighteen hours, and five minutes, approximately. He had gone through days that felt like lifetimes before, but none of his experiences--none of the torture and heartbreak and agony--had prepared him for this. For losing Felicity. For having her torn from his arms by Damian Darhk.
The minute she was gone, everything inside Oliver Queen was dedicated towards finding Felicity. Bringing her home, having her back by his side, taking the diamond ring from his pocket and sliding it on her finger . . .
But of course, she was Felicity. Of course she would find a way to break free on her own and just show up, in the middle of their base.
Her voice was shaky, full of barely-restrained emotion. Oliver whirled around, his heart in his throat. “Felicity,” he croaked, taking her in.
There was a bruise on her temple and a long, thin cut across half her neck. The dress she had worn to his announcement party was dirty and wrinkled and her hair was lank. Dark circles turned the skin under her eyes the color of a plum.
And she was beautiful and alive and here.
Somehow, he jerkily walked towards her, his eyes locked on her. Watching her for any reaction, for any sign he should back off. But all he saw was how carefully she was holding on to her control, how hard she was trying to keep herself together.
Felicity was so strong. But she could rest now. Because he would not let anyone hurt her.
When he lightly touched her shoulder, her whole body trembled. With a cry, she flung herself into his arms, holding on to him so tightly. And his arms wrapped around her, burying his face in her neck, feeling the shudders and hearing her cry, knowing his own tears were rolling down his face and dripping onto her skin.