Claim to the house
Claim to the house
Although his name is on the title for the house, (basically he owns it), you have been living common law and been a contributing member to the household from day one. Not sure where the 50,000 amount came from but what you are entitled to is half the value (assets) over the 8 year period you were living there. If you are buying his tires, paying off bills, and vacationing together then it sounds like you would be sharing the household bills also.
If this is the case then you should receive half the equity in the home accumulated over the past 8 years. Value of the house now - value of the house then - mortgage owing - down payment. If that works out to $50K then so be it.
Also, stay in the house till you work something out. He wants his house back so you will have to mediate something. This sucks, he left you, but you will have to work something out and unfortunately you can't tack on extra for pain. You will need to be reasonable.