One thing we can surely say is that if you want a partnership visa then you have to establish your relationship more strongly than before. Just because you have some pictures together and have a joint account would not hold its water as strongly now. You need to furnish more concrete evidence now. Maybe the reason for this is that some people might have missed the ease of grant of this visa for entry into the country. This would eventually lead to more unproductive people in the country putting in stress on the public welfare system of the country.
One seriously needs the help of a licensed immigration adviser in these cases now. Things like a temporary break up could lead to cancellation of visa. An immigration adviser is trained to handle such situations and when things are so strict it would be really wise to seek professional help, lest you want to encounter some unpleasant experiences.