I love him but afraid of his family members

My boyfriend and I have dated for two years.  He recently proposed and gave me an engagement ring.

We have had no fundamental problem, but I sense resentment towards me from his family members.

When I asked him about it, he said he does not see it at all and added that in any case it is not his family I am marrying, but him.

I have heard so many stories of failed marriages and I do not want to go the same way.

What can I do?

Agatha