It's normal to love my friend so much and consider her like my sister?
I met a friend at school, she told me that she feels about me as if i was her sister and i told her that i have the same feeling. After 4 years, i feel so attached to her, and sometimes i'm jealous from her friends and even her boyfriend, my love for her is very innocent, and i'm always afraid to loose her, i care so much about her and i love her so much i just can't stop calling her sis.