I just had an amazing first experience; I spent the night with my girlfriend and it was the first time I'd been "little" around her, and she was okay with it! We were both in diapers (I told her about the DL stuff and it turns out she really likes it), and I was switching between sucking my thumb and my paci while snuggling up to her, and she was really cool about it.
The only problem is, I don't know what to call her. We talked about it, and she's not comfortable with "mommy" or "little brother/big sister" terminology, and I'm at a loss for other titles or names we can use. Anyone got an idea?