I'm an officer. My (ex?)-GF is also an officer. We've been together for over 2 yrs and I felt things were going well. She's in a different Regt to me. She's told me that she has been sleeping with a SNCO from my Regt who I had viewed as a acquaintance/friend. Its been whilst I'm on exercise. He's sub-unit is based at the same bks as her and I'm 1hr away, so when I've been back from ex they've been up to all-sorts whenever they want. What do we reckon; pull her ejector handle or work on it?