User blog comment:Eobard95/OLICITY IS ENDGAME AND I'M DONE WITH ARROW BECAUSE OF IT!/@comment-27673963-20170505072754/@comment-29668301-20170506192110

What will happen is this:Oliver and Felicity get engaged in episode 22 (penultimate episode;also on Ollie's birthday)

Prometheus dies, and Team Arrow lets Slade roam free on the island. They go to thank him and say goodbye, and they all leave for the boat happily in the sunset, beatutiful music plays. Oliver and Felicity are the last ones to get on, but right before they do, you see Slade running behind them like an idiot and yells

"WAIT!!!!!!!!"

They wait, Slade catches up to them, and Slade and Oliver hug.

"one last thing"

"What?"

"I keep my promises kid, I keep my promises".


 * He stabs Felicity, impaling her through the somach, Oliver instantly retaliates and shoots him

On Slade's dying breaths, he says "Oliver Queen, I kept my promise."