We can joke and laugh about it all we want, but being left for someone else hurts. Being cheated on hurts. Seeing someone you love love someone else the way you wish they could love you hurts. Not being chosen by someone you chose hurts. HURTS.
It's laughable on X, but in real life, it's probably one of the most gut-wrenching things ever. You never really get over how badly that shit hurts