Not sure how to respond here.

Ex-wife wanted a divorced a couple years ago. It happened and I’ve been making the most of it. It was obviously hard for my son and me. We’ve bonded a lot and he stays with me a majority of the time. I work from home so even the days he goes to his moms, he stays at my place until she gets off work. He naturally feels more at home with me and we have a lot in common. She’s spent a great deal of her time trying to date, go out with friends, and such. I’ve done the same but not so focused on it. Anyways, she’s upset about this now. I don’t know what to say