i am a surport person for someone, it is so challenging,

i think you should not feel burdened to stay with this person just because of his situation, you have to say do you still really love him, if you do then you can work through things and try and get you both into a better situation, but you have said you dont love him any more, you then have to decide do you really want the rest of your life to be dedicated to him, remember you only live once and if your heart is no longer in this relationship will you look back when you are older and have regrets!if you only have feelings for him as a friend then take on that role, visit him once a week etc, good luck but dont give up your own life

This man sounds like he needs professional help and it is not fair on you to have to burden all his problems, especially when there are children involved.

You sound as if you have supported him and given alot of yourself to his needs, but without seeking proper help, you may always be in this situation. If he is on home detention then he still isn't dealing with his problem to better himself. He may be relying on you to look after him without him making the decision to change.
If you do not love him anymore, then you should not feel obligated to be with him forever, you have the right to a life as well and a chance to meet someone who will take care of you too.
I wish you luck in your decision.

I see that you are in New Zealand. In America there are places called board and cares where people with mental illness can stay. I don't know if there are such places in New Zealand or not, but regardless, you have to work on getting your life back.
You are not responsible for this man. It is okay to help a friend, but if you do not take care of yourself, you will not be around for him, your children, or anyone else.
You need some time off and away from the situation so that you can come up with more solutions. I am not saying to totally abandon him, maybe there is a place like I mentioned before where he could live.
Maybe a convalesant home or something. That way you can go to see him when you have the time and not be burdened by having him around you constantly and feeling like you are in a prison.

You're a good person for helping him. I believe that people come and go in our lives for a reason, because we need someone, or to learn a lesson etc.
I think that you owe it to yourself and your kids to get out before it's too late. And I say this not as being someone else's support person, but as a person with the problem. I've been having problems with mental illness for several years. From my experience, this could be a scary thing because it is an unhealthy relationship, and he's attached himself to you. And probably only you. If he starts to fear that you are going to leave or abandon him, he might resort to desperate measures. I would hate to see you and your kids be caught in the crossfire. He could become angry, violent.. and would most likely take it out on you or himself. Has he done anything like that in the past? Have you talked with him about how stressful it can be for you and your kids? Or would that not be a good idea?
I wish you and your family the best of luck.