We could, in theory, stop paying the rent and walk away from the house and, I guess, the owner would get to keep our bond and sue us, if we did that.
However, we would likely be put on a tenant blacklist (I believe there around 3 and that they are national).
This is NOT something we're considering - we pay our rent on time (have during the more than 5 years we've been here) and keep the house in good condition. The owner of the house has been absolutely fantastic and we've had an extremely good relationship over the time we've lived here. Jeopardising our friendly relationship with the owner and getting a bad reference is absolutely not an option.
Yes, we're breaking lease and, going into that, we knew that we would need to pay the rent till the end of the lease (31/05/2018) if we're not able to find someone to take over the lease. Once we find that someone, they will have to pay the rent until the end of the lease - to help out with that, the owner has agreed to reduce the lease length if the incoming tenant would prefer a shorter lease (did I mention fantastic owner?).
What the owner has not agreed to do is to reduce the rent - and why should the owner do that when we're paying the rent and are happy to continue to do so till either someone else takes over the lease or the lease ends?