My SO and I have been together for 6 months. He is the most amazing man and I couldn’t ask for better. He discusses everything with me no matter what it is and includes me in every decision he makes. He got divorced 3 years ago and has a 7 year old son. I get along great with his ex wife, she truly is an amazing person and we have gotten to be pretty good friends over the last few months. Here’s my problem. She married a man 4 months ago and has recently decided it was a huge mistake. Which we all knew and told her not to but anyways. She called my SO yesterday and asked if when she gets divorced if she could take his last name again. She was so nice about it and even told him to discuss it with me because she doesn’t want me to be uncomfortable with it. She really hopes our relationship works out and I know she really does feel this way. Her reasons for wanting his last name again is because of the 7 year old she wants to have the same last name as her son. Which I get. Part of me wants to be fine with it because it is just a last name but the other part of me isn’t comfortable with this at all. We live in a small town and I’m scared it’s gonna make me look a fool. But I’m also more worried for the 7 year old. I’m worried that if she does this he’s gonna think his mom and dad are getting back together. Which neither one has any interest in. So I’m not really worried about that part. I would just like opinions on how to handle it and if I’m overreacting on this situation.