Thank goodness you dodged that bullet. There are high maintenance gals and then there are the rest of us. High maintenance looks good on your arm but doesn't go the distance well. The second she started saying she needed a ring you should have wished her well and moved on. When she comes back - PLEASE don't let her back in. She won't have changed and she won't have grown up. She'll just be looking for bragging rights that she can lay 'em down and pick 'em right back up.