I bought this for myself - thinking it would help me keep from being distracted at work and while I was away from my girlfriend. She doesn't know about it, but it just makes me feel secure, and also feel like a "good boy". I will say it took a while to get the right size ring worked out, but it does NOT come off if you use the smallest ring possible without cutting off circulation. I've woken up at night when wearing it to a raging hard on but the device was wickedly unforgiving. I may someday give her the key... ;-)