>>35589
First, we've been together for 8 years, time does help a lot.
I told her about ABDL almost 2 days after we started dating, but on a "cute" side (need of cuddles, wears diaper to feel vulnerable etc.)
After 2 years, i started wearing regularly, showing her it was nothing and just REALLY comfy underwear. No problem for her as long as it was not every day.
Until last year she had trouble with her periods, but it got fixed. I suggested her the Tena panties "way better than period pad".
And finally a few month ago, she asked to wear diapers (real ones, with tapes) during her periods.
This was mostly motivated by the fact i told her we could have sex even during periods, without spilling blood everywhere if she wore one and i just had to pull it to the side.
So well... comfort, really hard erection, a bit of bdsm and submission with the diaper, pacifier gag and handcuffs.
I suppose the hardest part was to show diapers were both usefull and could match the submission fantasies she had (like a huge majority of people i guess)
Funny thing is now, when she feels a bit sad or tired, she will wear one without telling me, like its reassuring. I won't hope for more, it's already great that way.