Been together 12 years. Last 2 years have been tough - last 12 months particularly so but we were limping on. My gut instinct made me go digging. He is with a 20-something beautiful young woman. He's a walking fucking cliche. My knees are like jelly and I feel sick to the pit of my stomach. I want nothing more to do with him but I feel like I've been dropped into a surreal dream/nightmare. I have lost so much recently and this is the final blow.