After reading your post some more, I am convinced he is a player. And full of himself. Respectful man wouldn’t tell a woman he broke up with (or anyone) that women are throwing themselves at him. No decent man would say such things unless they want to mock you and enjoy making you jealous and hurt.

If he broke up with you, it’s unreasonable to expect daily contact from him, or any contact at all. Sure occasional keeping in touch whth long terms exes is not uncommon. But after short lived dating, I’d say no need to communicate at all. Why he is doing this or that is irrelevant. You can only control yourself. Block his number and don’t go to his work place