That's a good first step, firefighter. How do things work out from there? Specifically, have you noticed a trend in how long your gf will stick around before she starts looking at other men to fill that hole within themselves? Is it a few months, or years?
Are you living with one another when this occurs, or in separate pads? On time off from work, were there any special activities that you shared with your gf's, or was it more like hanging out together whenever you could?
Do you continue with daily workouts on your days off? Ever try to get the gf involved in working out with you? Imo, that could be a lot of fun and share a special health bond on dedicating yourselves to keeping on top of staying healthy together. Just like you do with the guys at the fire station every day that you work! You keep each other motivated.
I wish you the best! Take care!