Keys would be the last hing on my mind. As LBS's we are always trying to guess if W/H is thinking about us. I bet they do it, just as much as we do, so a key isn't really doing any harm being kept.
He's got to make the effort, otherwise he can just sit back and let you do all the begging.
M 45 W 52 SD22 S9 D8 BD 6 April 2015 Not living together 4 Dec 2015