Concerned and happy

So.... I was laying down with my boyfriend and one of his best friends who happens to be a female sent him pictures (for instagram) and when he saw that it was bikini pictures he immediately gave me his phone to see the pictures. I started looking at the pictures and I saw two of them and went "uuu this ones cute, but I like the other one she looks goofy" and all of a sudden I see a picture of her showing her ass in the bikini! I flip out and I go "NO, BUTT PICS EVER" and he takes his phone and texts her friend sending her the pics that I liked and then told her not to see him pics like that, it was disrespectful to me and the relationship. And she ended up freaking and appologized for what happened. I don't like her. Hopefully this girl won't do it ever again