Boyfriend of 4 years. We live separately and I have 2 kids he has 3 from different relationships. He tends to have his son most weekends as his other children are adults now. We go out sometimes with the older children but I notice he doesn’t invite me out with his youngest very often.
I feel as though he is deliberately keeping me out of the youngests life purposely. Have tried to ask him why he does this but he gets defensive. 4 years down the line we are still no far further forward. Should I tell him how I feel? I get the impression the son doesn't like me to take his dads attention at times which is why I take the back seat as I understand that children come first. However, how can we move forwards and build a family when he won’t allow me to get to know his child. Advice please?!