I hate to say this, but I do agree w/the other posts. Flush the plumber down the toilet. I may be an oldie, but I have never heard of someone getting that angry w/someone just because they didn't come to their house after a couple of dates. This man sounds like he's got some anger issues as well as "control". I don't have a good feeling about him. Now, he's dangling the carrot of introducing you to some of his friends...nope, not a good sign when he continue to dangle carrots to get you to continue seeing him.

Ginger, you deserve so much better and no one should need to dangle carrots to get you to go out w/them.