Years on I am still finding my SIL's relationship with my husbands ex wife troubling. It caused a huge amount of hurt at the beginning of our relationship and with my husband addressing it with his sister however it has continued over the years. Now and again they will meet up or she will make comments that could have come from them talking. I can't put my finger on why I find it so troubling. I don't think I would, nor would my siblings, continue to have a relationship with an ex partner. My husband just shrugs it off which makes me even more infuriated. Do I have a right for this to make me feel angry? How have people gotten over this?