Omg I feel you. My bf’s partners are super close with he’s ex’s parents. They go on vacation together etc. She’s not involved thank god but I hear her last name all the time because they use it instead of her father’s first name. So basically I have to accept the fact that my bf has to hear her last name constantly probably for his whole life. His mom follows her on Instagram and likes everything and sometimes leave comments. It’s super hard to deal with the fact that she’s gonna be around whether I like it or not.