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I need some advice from people. Thanks in advance. Im 23 years old guy, my girlfriend is 21 years old. We dating close to 1 years now. From the beginning our relationship was so nice, she was so sweet and good. My parents and my friends like her so much. But getting to last mounth evrything change. My girlfriend become very rude. she is insults me even in the present of my friends. when she cames to my house. she always switching of her fone, only God knows why. she does not believe anything i tell her. she keeps telling me i have other girlfriends. I am tire of all these. Should i leave her?