My ex and I split up four months ago...

Dear Dr. Frankie,

My ex and I split up four months ago. It was a painful breakup and we haven’t really talked to each other since then. To be honest, I’m not ready to. We still have keys to each other’s apartments and that’s starting to feel very uncomfortable to me. It’s not that I don’t trust her but it just doesn’t feel right that she could potentially come into my house at any time. What would be the best way to return the key to her and get mine back? Shall I ask a mutual friend or just send it in the mail? Any suggestions?

Dear Keymaster,

I recommend sending the key back with a simple note asking for your own key back.  If the idea of contacting your ex is absolutely unbearable then consider changing your locks.