I need help/ advice on how to do this.

Situation: currently I am in a traditional relationship (M 27 & F 28). We have been dating for 2 years and living together for 1. I have been successfully repressing the urge to wear diapers or purchase any more by being more of a lurker in the community living vicariously through other peoples stories and interactions. Recently that urge has been stronger than usual. I foolishly thought that over time these feelings would go away but they have not. When it comes to diapers I am more of a DL than an AB. I like to wear casually, have a onesie or two, wear to the movies or out to eat, but I’m not really into playing with toys, bottles, or being treated like an infant. I am terrified that if I tell her about this she will run for the hills and we will lose everything we’ve worked hard to build over the past years.

Question: is there anyone out there that has had a similar experience ( super secret DL life) and had to tell a partner about it? Any inquires are welcome,

Thank you for any help you can offer.