The most my ex ever said was “OK”. One time in the beginning he thought I was dating some guy ( which I wasn’t) my daughter brought up. He did get mad. But he was actually the maintenance guy in my apartment complex ( my D “loved” everyone at the age of 3)
My daughter has no problem for me dating. She loves it. They do just want to see you happy and a new person is actually exciting to them
Just a warning no one gave me. Little girls to turn into little A-holes when they hit the 6th grade. I was not prepared. You got some time.