I fantasized while being with my ex because I didn’t felt desired. My ex wouldn’t touch me or kiss me while having sex. I expressed my concerns of not feeling desired to my ex but he never changed. I was miserable back then. I don’t know if he lost respect but I’m only human.No way to say for sure, we can only speculate. Here's an idea: he requested video-call to tell you that's inappropriate discussion considering he has a GF, you refused it and he may have taken it as you wasting his time and leading him on with texts.
The fact you were fantasizing about him while you were with you ex...that doesn't speak good of you, so he probably lost respect for you. In this case, why would he feel flattered by a compliment coming from a woman he doesn't respect and probably doesn't find attractive either.