It's sad that your ex did warn your D. that he was living with OW. I can imagine how hurt she felt to see pics of them and none of her. It's amazing how fast they move in together. My ex moved the OW in within weeks of our split. The rose does fall off the bloom quicker that way though. My Mum used to say quick to flame the flame will fizzle
Me 52 H 44 T9 M 5 BD 12/11 H split 8/12 OW moved in 12/12 OW gone for good 6/14 We get closer again 9/14 SD 13 Me 4 Grown
Accept what is...let go of what was and have faith in what will be.