Thank you for contacting us
My name is Clare
I shall do my best to help you but I need some further information first
What is the problem you need help with
How much is the house worth and how much is outstanding on the mortgage?
when does he want you to leave and how long do you actually need?
How much was the mortgage payment each month?
What else did you pay for?
What is the going rate for rent in that area?
Sorry for the delay.
Since you are not a joint owner of the property you have no automatic right to live there.
I am afraid that all you are entitled to is "reasonable written notice to leave" - and to be frank six to eight weeks is the most a court is likely to feel is "reasonable".
The fact that you paid the mortgage for a short period may give you financial claim on the property - but it is a very small one (the fact that it came out of negative equity in that time is not relevant) since you would have had to pay rent in any event.
You would find it difficult to actually pursue it in court - it would not be a straightforward application and would be an expensive one
I would suggest that you ask your ex for say £2,000 OR the extra time to move out in
I am sorry not to give better news - please ask if you need further details