Oliver didn't know why he did this. He shouldn't have. You're his ex spouse, one who separated with him mutually due to his role as Green Arrow taking up most his time. The public saw it as just falling out of love, but they're wrong. He didn't stop loving you. He wakes up every morning and instinctively reaches into your empty spot.

Which brought him here, years later after the divorce, here in your house as he was practically collapsing at your feet on his knees from where you sat, his head on your knees as he hands hold your legs, he's not even drunk, high, whatever, he's dead sober, yet just as desperate for you.

"Please, I'm so sorry, I'll make time, cut back on patrol, missions, anything... I just need you."

It's almost pathetic, yet he didn't care. Losing you was the stupidest thing he ever did. He just wanted to drop everything to marry you again.