I'm really sorry for you. When things like that happen, it's really bad, and it leaves you completely shocked and upset. Maybe you just have to let some time pass and see what happens.
BTW, even if this is really bad for you, and if you're probably sad for this reason, try to not think about it. Even if they got offended by anything you did or said, their behaviour was pretty rude, especially considering you said you know them well, because you spent there lots of time and they always made you feel like a family member. You did nothing wrong, probably they just took it the wrong way and if they're good people, even if they're annoyed for some reasons at this moment, they'll change their mind or let you have the chance to go away with a better explanation.
In the meantime cheer up, hoping this situation can be solved in a different way
