Oh, it's examples you want? WW and I would routinely write each other some 50 emails a day, during a work day. We'd keep each other appraised of what was going on, we'd continue conversations from previous days, we'd have arguments, we would plan the evening, talk about the kids and whatnot. With this girl I've been seeing for a month, we say good morning, we send pictures of our day, talk about work, joke and flirt, make plans, say how we miss each other, then goodnight. Of course it's weird that XBF wouldn't reply to "good night"! We've sung it in every way: stop wondering what's wrong with you, you just dodged a bullet.
Some tough love: of course you were too inquisitive and demanding... for him! But who cares about him? There are tons of people out there who want to communicate like you do. Asking what he means by "busy" after six months is the least you can do. Come on! I bet you know that. Stop marching to the drum of other people, especially those who don't want to be with you. Find you own drum, then go find someone with the same beat. No more deadbeats!
Don't make duration the focus of your relationships, especially not this early. Think of whether you two are a good match. Ask yourself if he makes you happy and feel good. Look for the signs that he also wants you. I'm not sure it's insightful, but I seem to notice that I can find people with the same "common sense" (which is less common than we assume) than me. Things just fall into place and I don't spend as much time explaining myself or trying to understand a tortuous (to me) reasoning. I'm not sure we can feel it right away, but sometimes in 5 seconds I know I don't fit with a girl. With New Girl, I left the first date thinking "OMG, this is the perfect match" and things are falling into place ever since.
We won't convince you with a few posts, and therapy will help, but I think you're starting to get the sense of where you're going.
M39 D6 D3 (at S) S 2014-09 D 2016-09
"You can't start a fire sitting around, crying over a broken heart" - Bruce Springsteen.