Yea it's too late to claim bedwetting and I don't really want to mislead her. I still haven't told her yet, I've been thinking I might just tell her straight out. I've got an idea of what to say (I appreciate any feedback, thanks)
"There's something I want to tell you, I've been wanting to tell you for a while now but been scared of your reaction. I figure you love me so you will try to understand it even if it seems strange to you? I haven't told you before now and I'm sorry, it's not because I don't trust you or didn't want you to know, it's just I've never told anyone before, you're the only one I've ever trusted enough to tell and I think you would rather me tell you than keep it to myself.
I haven't done it since we've been together but I really miss it and have strong desires to do it again. Ever since being young I've wanted to wear a nappy again, not because I want to be a baby again, just because I like the feeling. I still have these feelings to this day, like I said I do not want to be an adult baby, I just have the urge to wear a nappy sometimes. I have worn them now and then since I was young, I really enjoy wetting myself and soft feeling of a nappy , it's also quite a turn on for me since I got older.
This maybe tough for you to understand and if it is maybe you should try it? I know I would like that, it's kind of a fantasy I have! I'm really sorry I haven't told you sooner, I've tried! It doesn't make me a different person, I'd never want anyone else to know and it's not something I'm proud of nor do I want to do it all the time, just once in a while would be nice, even better if you could accept it and participate also. I hope you still love me, I know I would still love you if you liked something different"