I have 2DC with my EXH. My EXH had a girlfriend that had a one year old son. My DS became very fond of him and thought of him as a little brother. He was always looking forward to seeing him on the weekends he is with his dad. His dad split up with her (or her him, not sure which way) and EXH has another girlfriend that he’s already introduced DC to, unknown to me until DD told me. My mum used to do this with her boyfriends and it gave me attachment issues. I have remarried since EXH so my DC have met and gotten used to someone else but it’s been for 4 years, I never introduced them to anyone else (although there wasn’t anyone else in between). I’m worried that EXH introducing them to all of these people (this is at least the third- could be more that I don’t know about) will affect the DC. DS is gutted about the boy he was very fond of. It was a case last weekend of ‘I’m not with her anymore but here’s my new girlfriend’. Would you say something? Or is it none of my business?