My dear Jack, this is a casus belli situation. In case you don’t know what “casus belli” is, it’s a Latin expression meaning an act or event that provokes or is used to justify war. Perhaps you don’t realise it but you’re turning this issue into casus belli – a provocation scheme or justification for war. You’ve already had a discussion on the issue, drop it! The answers you got may not be adequate but they’re a reflection of your girlfriend’s portrait of you. She’s fessed up but you’re still driving the issue as if you’re a criminal investigation department interrogator following leads. You’ve got the answer you need yet you insist on humiliating her into a full scale confessional.