"I also expressed my concerns about his girlfriend being so possessive and controlling."
Often children will pick up relationships that mirror what they were raised with. Repeating patterns and themes. I do not say this to offend. Ponder this to see where this program resonance may have been picked up from.
I can read conscious languaging cues fairy well. In your message, the choice of words tells a particular story. Go back and reread your message and see if you pick up on the "hidden" pattern.