The last name
BIO mom kept his last name, I get why, so she could have the same name as the kid.
BUT it’s one of those little things that sucks/hurts.
I would to be #2 or have to explain I’m the stepmom. She even kept it on social media with no (maiden name) or anything.
It’s one of those silly little things most step-mom’s have to deal with as a lot of bio moms want the same last name has the kids. When you try to explain to a 1st wives or none-stepparent they really dont get it. “A last name shouldn’t be a big deal”
Sometimes I just don’t want to share the same last name has a person who sucks.