That is the very reason why I asked, why do you ask.
You as co-owner are entitled to half of the profits or whatever the percentage of ownership is stated on the deed. Normally in such cases, owners are not so lucky and they pay the mortgage but may not be on title. Ex: boyfriend bought a house, then you moved in and paid for half of the mortgage, taxes, insurance etc. each month yet your name is not on title. It is possible for you to claim and equitable interest in the property based on your payment history.