My BIL doesn't talk to us because of his wife..

Sorry for the long post..

Around August is both of my mine and BIL bday so I have talked to them about me celebrating this year since this time I wasn't pregnant like last year and I was supposed to celebrate my daughter's 1st bday too so I let his wife know if they had any plans because you know I want them to celebrate her bday because my boyfriend doesn't have any other family here is just him and his brother so I really want it our baby girl to celebrate with them coming over.. and his wife was always giving me excuses how they have been planning all this other vacation with her family which I understood yeah it bugged me but I was like ok whatever so I mentioned that it was ok that maybe next year we can celebrate! Well they got all mad Called my bf making seem like I was not really inviting them at all like no I wasn't I just told you that is ok that maybe next year they could come! The last straw for me was when my BIL told me to shut up when I was trying to explain that it was a confusing situation they made it seen like I was the one not wanting to invite them when his wife was the one always giving me excuses of not attending! I honestly felt like it was time to cut all relationship with them is so much for me to even handle is it me who is wrong here? I just felt really hurt that it happened when it was supposed to be the happiest day for my baby & us!