Guys plx help!

oi guys , my bf is too protective and jealous about me . He said me to unfriend all my guy friends on fb . Should I do this ? I don't want to break-up with him coz he is my childhood crush and i have loved since i was 8 years old. I can't just leave him. He is too over-protective about me and doesn't lets me talk to any other guy except him.He also asked for my fb account password which I gave him. Plz help me. Why is he so insecure and jealous? Is it normal behaviour for every bf?