This not going to be a long story, but I guess still interesting enough to share. My current girl friend is a glider Pilot. That's how we got to know each other.
After we knew each other for some time, she was starting to have longer flights. And one day, she told me that she was confronted with the simple problem of not being able to go to the toilet when flying. So we did a little Internet search and asked a couple of people about that topic. Now, there are a lot of other options for male pilots. But for female pilots, it turned out, that the easiest way and most common solution still was to use diapers. She did not know about my affection, and I actually also did not want her to know at that time. But we talked about the topic quite frequently. And it did not take long until she finally showed up with a bag of Tena Slips one evening. She mentioned that she wanted to try them out at home first, before she actually was going to use them on a flight. Certainly she did not intend to do that when I was there, but it was just to alluring to me. So I asked her if she would let me diaper her. She argued, that it would make her feel awkward if I'd actually see her in a diaper. But I reassured her, that I was going to find the diapers actually sexy on her. She could not understand why I insisted so much on joining her, but she was in no way loath to it and so she finally agreed to let me diaper her. I really tried to make it a very enjoyable experience, as I hoped that she might somehow even enjoy it so much that she would let me diaper her more often.
Surprisingly that worked out. A few days after I diapered her for the first time, she asked me if I could diaper her again.
Actually there's not much more to tell. We are still together, and she wants to get diapered quite often