My work has me in one state for a month and then home for a month, so in total 6 months home 6 months away. About a year ago I start self-locking in a Chasity cage and really enjoyed the orgasm denial, but I still had the key.
Finally, got home and had the courage to talk to my wife about becoming my key holder. 35 years of marriage and vanilla sex the entire time she was shocked. We talked a lot and at the end of the conversation she smiled and put me in the Chasity cage, and she took the keys. I cannot believe I could have lost this wonderful emotional intimacy with my wife. I am so happy, and she is starting to tease me which is so wonderful.
Unsolicited advice. If you have a good relationship with your partner, talk about your desires.