Fiancé's Family Dislikes Me For o Reason Need Advise

Dear Aug,
You suddenly became in active on your blog. I hope all is well. Please don't relent because s lot of people depend on your good works to survive the harsh realities of life. 

I am an ardent reader of your blog and I've also realized that your blog has helped so many people in terms of advice. Keep the good work.

I've been in a relationship with this guy for 2 years now and we love each other very much,he's given me so many reasons not to doubt his love for me,but,my problem is his family especially his sister, my presence alone seems to make her skin crawl,she talks to me anyhow and she has also poisoned the minds of his other siblings that they give me attitude when they see me.I complain to my boyfriend and he keeps promising me to talk to her but she keeps repeating it.she openly insulted me in front of my man's friends telling me to leave her brother alone  and my boyfriend just sat down there and watched her,only to take her out and they discussed God knows what. Dear readers I desperately need Ur advice on what to do. no insults pls

Replies, 
Thanks dear, I apologize for the break. I had to attend to some pressing issues which warranted my long absence away from blogging.
I was once in your shoes, and mine was a lot worst than what you described above. My advise is that you try as much as possible to win the hearts of your man's family members. It is normal for them to see and treat you as an outsider(enemy) for so many reasons. One of such is that he gives you more attention more than them, spends more time with you, and probably loves you more etc..
Try to be a little more friendly, participate in family chores, engage them in discussions, and with time you will be accepted just like a member of the family. You must also endure negative attitude towards you. 
Cheers