Depressed family issue. I should change,

We r newly married, my husband has sister, he cares for her more,my husband don't have parents, she is in abroad, he will share everything with her only, I too have brother bt i don't have close relationship, they r too close, it looks odd for me, in my family we won't even touch and talk but my husband lie in her lap, I don't her talking to him, but I don't like tis much closeness, he gives over importance to her, he will say everything to her, he will discuss everything with her, everything looks new for me, daily am thinking of this only, not able to spend gud time with him, we r having fight becoz of tis issues, I don't know how to solve tis, am not able to adjust with tis, I want him to change, I don't know whether tis is correct behavior or over possessiveness or I should change,