I feel the same way on the grad memories. When they talked about stuff I would remember what stage exh and I were in at that time or what frame of mind I was in. Just try and focus on your D like you told me. Its a proud moment.
You get along well with your exh now don't you? Maybe he is jealous of your good relationship with him for your kids. I know my exh always put my exh down and picked on me because of this.
When is the graduation?
Me: 46 FWS: 36 Married and Divorced 4/07, Pregnant 7/07,False R 7/07 Baby Girl born 3/08 Kicked him out because OW: 7/08 5/10 He realized what he had and lost. Moved home! REMARRIED 3/14/11!!