A little background I was previously married and my ex's niece is my goddaughter. I've continued to be invited to and go to the family parties for her and her brother's birthdays. My ex attended until he found out I was engaged, since then he hasn't come (it's his family).
Both kids will ask if he's coming to their parties to the point that my goddaughter begged him to come to her birthday party last year and he wouldn't. I feel bad because the only one getting hurt is the kids. Do I try contacting him (we haven't spoken in probably 3 years and the divorce was civil) telling him that I think he should attend the parties for the kids sake, he doesn't have to talk or look at me but should go for the kids or do I just leave it alone? His brother and sister-in-law seem to let it go.