Mate if you werent married then she dont get half. If you've no kids then you see a solicitor and sit down and prove via your bank statements what you contribute towards the household and she has to do the smae, then it's split in that manner. So you might be better off than you think.

Neither of you can force the otherone to sell

However if you default on the mortgage she is just as responsible for it as you are


If you are married or have kids you're fucked :-(