If you find out your OH rang his ex girlfriend (was with her 5 years from 16 - 21) is now 28 but had been with you since he was 25, would you be pissed off?
Just for context, it was a night out with his friends, he was drunk. Next day he asked me to call his mum through his car and her calls showed up on the in car recently dialled system. 2 calls, one lasting 10 minutes, another lasting 3. I am so angry and upset, especially as I have no idea what they would have discussed. He doesn't know I know yet.