What do my boyfriend cousin female friend get mad when she see me?

Question by mina: What do my boyfriend cousin female friend get mad when she see me?
My boyfriend and his cousin live together and i live with my boyfriend. His cousin female friend comes over and spend time at night with my boyfriend cousin. Everytime she see me and my boyfriend cousin talk she get bad. And i dont look at my boyfriend cousin like that i dont evening no this girl why is she all ways mad at me?

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