What are my rights after 5 years of being with him and living together and me raising his kids as my own?

You are legally a tenant at sufferance if you don't pay rent. He must give you a 3 day notice to quit the premises.

You situation is a fine example of why a marriage license is more than just a piece of paper. The owners of the property or the person you sub-lease from can give you a three day notice for certain violations and/or a 60 day notice without any reason. You need to take some action to protect yourself.? Getting married by going down to city hall to have a clerk do it is very cheap; there is no longer is a social stigma from being divorced and it will give you more security and some economic benefits. You could instead draw up a contract as to what happens if you break up you are entitled to X items, Y notice to leave, reimbursement for any rent paid, $Z for B month as support, etc.