[Once he catches it, feelings of warmth will flood through him. There's this comfort and trust and belonging that before recently was absent, but now... It feels a lot lighter, happier. Felicity's feelings of friendship and love will wash over him as they return back to her. He may even catch glimpses of two men smiling and joking beside her in some sort of basement with lots of computers, or a young woman with blond hair patching her up after an attack.
[Her expression is one of shock and recognition as it all comes back to her. So that's what it took away...]