iMessage says “You started sharing location with .”

This showed up in my messages after I blocked the number and when I know I didn’t share my location. I have the contact saved so it shouldn’t be blank. I went back and noticed in other texts the same message at different times of the day but only if he was included in the group text. I was constantly sharing my location with him and I’m sure I would remember a day I started sharing a location with him 5+ times randomly throughout the day. Also wouldn’t there be a message saying I stopped sharing my location before it being shared again? My main concern is that it happened after I blocked him after breaking up with him and only showed up when I unblocked him to get my stuff back. How could this have happened and what do I do to fix it? The first two pictures were when he was unblocked and the message never showed up in our texts. The last picture was with him unblocked and showed up in all groups he was in.