So my SO is BEST friends with my brother. And I am so happy that they are close and that they get along so well. But it's to the point where I feel like he's more his best friend then mine. Lately he's been hanging out with him more. And last week they went out and he didn't show up at home til 4 am completely hammered! And my brother is completely childish and irresponsible and he's been slowly rubbing off on my SO. :( he bailed on plans with me on the weekend so that he could drink by the pool with my brother. But I feel bad when I get mad at him because it's my brother and him and I want them to get along. But it's making me feel like he wants to go drink with him than hang out with me :( and it sucks. And I don't know what to do without sounding like a horrible person :(