I recently just told my GF that I was a DL and she was okay with it, but the past people in this thread are correct it should be said around the time the word love is said, that's when I did it. And telling it in stages works very well, for me the first stage was telling her I had a diaper fetish, the second stage was telling her I've worn and used diapers recently, and the 3rd stage was telling her that I wanted to wear them around her. Try showing her this site and let her look around and be there if she has any questions, hope this helps!