Good job. However, you need to not respond at all unless its very important. Also, you dont need to tell him what you are doing. No need for the text about the meeting or leaving.
He is actively disrespecting you. He is not your H at the moment. When you go do things for yourself for GAL, just do them. "If" he asks afterwards, like if he is waiting at home and asks where you were, you be very vague.
H: "Where were you? Why didn't you answer?"
You: "I was busy"
He doesnt deserve the specifics. He doesnt get to be both your H and someones BF. Let him wonder what you are doing. Let him get back home to you not being there. Let him wonder where you are and whom with.
Just live your life. At this point you are focusing on yourself. Enjoy yourself. Do things that keep you active and make you happy.
M:16 T:21 H(me) 38 WW: 38 S11 D16 D19 Red Flags of A: March 2018 ILYBNILWY: August 4, 2018 Moved out of MBR: September 24, 2018 BD/Confirmation of A: October 31, 2018 D Filed: March 27, 2019