Fucking FIL

So this conversation is with my husbands step father (he has his only siblings long story).

Were having a dinner and my husband gave me the numbers to his family so I can put it together. I feel like this was really rude like how would I get your number if my husband didnt want me to ask. Or do you need my husband to invite you? I honestly want to say fuck him unfortunately but those are his only siblings he loves them and their father wont send them alone. (He's a x marine)