Laurel appears to be offering comfort to the woman who had Oliver's child. Of all the women he's been with in that room, the one we don't know is the one who had his baby.
Lance and Diggle look on. It's almost a circus, this fiasco Oliver has created. And, yes, it's all happening as a result of the terrible decisions Oliver Queen has made. Cheating, lying...it's never ending and years after the fact.
As if it's not already going to be awkward with Samantha given the secret, Laurel gets to find out Oliver cheated on her with someone other than her sister, as well. Good times all around!