Not paying bills

Boyfriend has been taking my half of the bills and not paying them... He stuffed the letters into the rubbish. I only noticed as he hadn't put it in recycling bin. One bill for £345 one for £75! This isn't the first time he's done this either, I got stuck with a £500 bill that was getting passed to debt collecters a few years ago. I'm currently on maternity so my pay is not great and he is earning great money. Annoyed that no matter how many conversations we have about money this keeps happening. When we moved in he set up the electric and water bills in his name and has all the bills online so I can't see how much it is untill we owe them loads of money and they send a letter out. Is there anyway to get added to the accounts? Can you have joint accounts? Not sure what to do.