Need to vent

So I’m getting married in 2021 (yes almost two years away). I had already asked my three bridesmaids with gifts and they of course said yes! How exciting right?! So we’re in a group chat for the last two weeks talking about dresses and shoes and hair. Well now all of a sudden. My one bridesmaid text me earlier and tells me she can’t commit because her and her husband are renewing their vows two months after my wedding. No big deal. I completely understand. But now here I am. Wasted money on proposal gifts for her and literally have no back up bridesmaid because I have no friends. ( I choose to not speak to anyone). Now I’m like wtf am I supposed to do now!? I just needed to get this off my chest because she should have told me no when I asked her last month. I guess it is what it is!