But for me is family have been nothing more that trouble makers who will never stop trying to break us up
You got it.
The family will at first be very nice to you, in the wary way a group of natives might circle a missionary and seem almost friendly.
But believe me, before long you will be soup in the pot, over the campfire, and most likely scalped beforehand.
Polish women in particular are very very very jealous of their men - even, eg, if their brother-in-law marries or is with a non-Polish woman.
And remember that to Polish women, anything you do that is in the tiniest bit different to them will be seen as outrageous behaviour. Not to be tolerated. And they will want to rescue their own from your evil (or inept) clutches.
There will be a turning point, when they will start talking to him about you, or criticising you openly, when he is there, but you aren't. Then they will start saying things like 'well, if you aren't happy with her, life is too short' (most likely after you and him have had an argument caused by their meddling).
Yep. That's the way it goes. Polish husbands are expensive, emotionally speaking. But can be worth it.