I’m a writer finishing up a novel. So what’s with the How To website about dating, especially middlesageish dating? When I started meeting men––or should I call it redating––in my middle ages, I knew nothing. Here are a few of the many things my friends said: Don’t take it personally. Nothing has changed since we were thirteen. There’s a lot of monkeying and ghosting. It’s a numbers game. Everything has changed since we were thirteen.…