Sweetie, do you think you can get to the point where you aren't even thinking about your H except as a co-worker? Because, for your sanity, that's kind of how you have to adjust your thinking. Otherwise, your Co-dependency on your H is like the cement blocks that are keeping you underwater. You aren't going to be able to breathe and move forward until you cut the chains. And your H isn't going to even consider coming back until you stop trying to drown him with your expectations and pressure.
Go out, live your life. Do things that bring joy to you, independent of him (including not thinking about texting him, what he's doing and why he is doing it). That's what makes an attractive woman. And that's what will help you start to see the value in yourself as an individual.