Dear Lazym
I've tried to go through all the replies you've made and a lot of comments from MN members. Forgive me if I have missed any important facts.
First I want to congratulate you on the 2.30 am rising for work! That is true dedication! You really are brilliant to do that for such a long time.
Next comes to mind your son going by bike 6miles every day on that dangerous road - I wouldn't like that, and completely understand your views. Please don't risk it. Think of the Winter, in the dark , ice, no, it's not a good idea.
Now the very important matter of your security, which is bound up with several matters. You are not the owner of the house according to the mortgage. You do not know whether you are named as a beneficiary on the life insurance which your in-laws hold regarding the mortgage. Your partner is unreasonable, does not help in the home and does not appreciate you, and frankly, cannot be trusted to act fairly concerning your security.
I think you need professional advice concerning your position. The CAB seems the first place to turn to but in my experience they can be hard to contact. It varies according to where you live so please look into it and try and get an appointment to ask for help. Take a list of your worries about your not being secure especially concerning your partner trying to coerce you into taking full time employment. About that - he seems to want you to bring in more money but why? Is it just to benefit him? Use the word 'coerce' please, it makes a difference. I have serious doubts about him more later.
Regarding looking for a FT job, I'd hold on for a while, get some information about your rights first. Start looking for what you can do working from home, preferably part-time.
Regarding your partner, I have close experience of someone similar. So similar it makes the hair stand up on my neck. He would not agree to name me as beneficiary of his pension should he die even though we were married - in his case reluctantly as he was not willing to make his relationship official but I was not willing to have children without being married. I am old so it was a different time then. He said if he left me with children I could go out to work or 'the State could look after them'. He would not even get a new watch strap because he said they were ripping him off so never wore a watch again for 30 years. He would not put me on the deeds of the house. However, we moved and a Solicitor was so shocked, he had to put me on the deeds of the next house. He would not have a joint account, never gave me a penny.
Your partner is not safeguarding you at all.
You must seek advice.
Do not automatically think getting a FT job is the answer. You have been the FT carer of his children and his home at the expense of your own career. If he decides to dump you, this counts in your favour.
Whatever he is like, your future, your retirement, needs to be protected.
Solicitors often give a free half hour consultation. It might be worth looking into.
Please ignore any messages on here about your needing to work FT to demonstrate that women are equal or whatever ideological argument they are making. You are only here to protect yourself, your children, and your individual situation. Just listen to kind people who care about you and want the best for you and who can advise you about aspects of your situation.
Keep your chin up. You are a hard-working, loving mum and you deserve to have a secure and loving home. Let's ensure that this is protected for you. You have worked hard enough for it. Good luck.