First you wore panties, then you dressed up, now you are locked in a cage that you lost the keys for and there is only one way left to feel release. Let's hope you are a fast learner.
You never thought you would find a girlfriend, so when the first girl took an interest in you came along you agreed to do anything for her. Now you are seeing what she really meant by anything.
For two months now you have been locked and forced to ride a dildo any time your partner brought home a partner. As of last week though, you know have to write fanfiction about the events as they are happening.
Its been 3 weeks since you got locked, you are not allowed any stimulation of your little clitty at all. This is what you have to resort to for orgasms now.