markules
Marc, There is a possibility that your friend is not telling the whole truth of only mastubating weekly, he might be also having sex. I think you need are larger sample the just one guys orgasming habits before you do anything irreversable like giving your parents your keys.
That said a maximum of one orgasm a week is a good first target as you seek to control your libedo. Your long term target I think should be to quit masturbating completely but working towards once a month would be good.
It sounds as though you are currently orgasming 360 times a year . I'll take a few days as being about 3 days so currently that would be around 120 times a year maybe less when you go for longer which is a lot closer than your current target than you realised.
Do you think you are gay, bi or straight?
Just keep on keeping your penis locked as much as possible and look for a key holder who will be happy to supervise your cleaning and relocking.