I had to refinance in January but in order to do so, I had to put my boyfriend on the loan to debt ratio (he's been living in the house for 3 years). He was on all paperwork but he was never put on the title to my house... is there any way he can ever take half the house from me since he is NOT on the Deed?

Does your state have any laws regrding common law marriages?

I believe after 7 years of being together but we've only been together for 3

You asked if he could ever take ownership and this is one way. I don't know where you live but you can Google your state's name and common law marriage and you will likely get your answer.