Greetings SpikedLemon,
Just wanted to say welcome and the people here are really nice. As for not telling your gf or telling her, that is a choice you will have to make. I can only tell you that my bf is a dl and hid it for a year. Like you he was unsure how I would take it. He did tell me. I was not mad or upset, but set out to explore it and he gave me a list of sites he goes to. I did a lot of reading (and still do). The day after he told me we went to the local drug store and bought some diapers. Ya know I found out that I love to wear them. I actually wear them more than he does. you will know what t do when the time comes.
Shadow