I am in my mid 20's and have 2 younger sisters, and also a bigger sister who is also in her mid 20's. I get along with my big sister but dont usually talk to my younger sisters. I always talk to my big sister about anything, except about my GF, and when we talk we usually talk about business and we get along so well. I've known my first time GF for about 2 years now, and this seems to be a big problem for her. I always talk good things about my big sister to my GF, but not saying much about my 2 younger sisters. I usually compare my big sister with my GF. I always tell my GF my sister dont do this and dont do that. This gets my GF very upset. When I took my GF on a eurotrip, I was texting my big sister for advice because this was my first eurotrip. This got my GF upset. Since my GF doesnt like me to mention my big sister anymore, I would obviously stop doing that.
1. Am I an idiot talking good about my big sister to my GF?
2. Is my GF an idiot not knowing its my sister we are talking about and not a random girl?
3. Should she be upset?
advice?