So me and my partner have been together 5 years, we have 2 kids together. Things have been fine up until today and now I'm left wondering what I've done wrong. We both have a mutual friend that I met a few years ago through him. I asked my partner to pass a message onto someone we both know (just asking if she can give me a call sometime) as I dont have her new number and rarely use social media so just thought it was easier if he could ask for me. Anyway, he didnt so i asked our mutual friend and he did. Today my partner found out I asked and went mental at me calling me crazy and other horrible names. Now as we are all in the same friendship group I really dont understand the problem but it blew up into an argument where he was calling me a sly twat and my partner is now completely ignoring me. Am I crazy in thinking this isnt a big deal and its blown up over nothing or is he right that I have crossed some kind of line?