I am a girl and I have a twin brother. He is my best friend in the whole world. I can trust him with my life. He has never let me down. If I have a problem and I don't feel like telling my parents I can talk to him and get good advice. When I had a rough time with my boyfriend (my bros best friend ) because I wasn't sure if I was ready for a committed relationship he helped me through it and here I am 3 years later and we are still dating. He also confides with me. When he had a hard time when our dad wasdeploying when we were 15 ( about 2.5 years ago). He is in the navy. My brother came to me and we talked for a few hours and he trusts me with his life too. Also when I got my first period at 14 he gave me hugs and would lay with me because I felt so ackward about it. I actually told him first. I love him like no other and I hope our relationship stays this strong. Do you guys think a relationship like this with a twin brother or sister is normal??