It's all about deciding what you want and sticking to it.

You write that you ''can't'' leave him - this is not true. Nothing is stopping you from leaving, except you. You absolutely can leave him.. IF you wanted to. At present, you are choosing not to leave. So, it is not 'I "can't'' leave him' but 'I don't want to leave him'.

As long as you stay in a dead-end situation, you are denying yourself the opportunity of anything different. But at the end of the day, it remains *your* choice and what you want to commit to.