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.
These days the girly looks and the cage were just part of the normal attire your mistress expected of you, however the leaking in the cage that was constant, was punishable by a whip, cane, or longer sentence. It all depended on her mood.
When your partner suggested you try some bondage to spice things up, you never imaged it would start with 3 weeks of chastity followed by a shibari session ending in free use for all your partner's friends.