If you split up with someone, and within a few days they appear via social media to be seeing someone else...
Would you think it's been going on a while behind your back?
I was with him for three months, and we'd never done anything on social media..I finished with him on the Teusday and by the Sunday he was appearing online with someone else?
I finished with him for him being funny about commitment and not wanting to be too "boyfriendy" and now he's being boyfriendy with someone else?
Gobsmacked?! Must it have being going on behind my back?