Hello,

Personally, I dont see this as a "she's the domme" rather its up to her about including others... and sharing him.

If this is the case, Your concerns are justified, The girl with the crush can do any number of things to step over the line. Even if its a restricted case of Girl/Girl only play... One step outside, and a running mouth can cause all sorts of issues.

Re addressing all your concerns with your girlfriend is the best course of action. Explain any ideas of what your worries are, in detail if you have to.

Thte last thing anyone needs is for fun to cause them to be "outed" in public