Relationships

Who should I choose between my mom and my stepmom?

Long story short, for almost twelwe years I've been shuffled between my natural mother and my stepmother.
My natural parents could not always take care of me so for some periods since I was a boy I was 'adopted' by another couple who became my second family.

Things have always gone well and I always thought that having two moms and two dads (natural and stepdad) made me very lucky, since what I couldn't get from one, I could get from the other.
But in the last year my mom and my stepmom started to disagree on more things and they did not talk to each other for a while.
Two days ago I made things worse by trying to make peace because I told my mom that even if she's my natural mother she did drop off the radar for years like I did not exists, and I told stepmom that although she always cared for me and loved me like her son it's all not real since she's not my biological mom. From what I know, she can't have children of her own and I realize now what a jerkass I've been in saying that.

Now neither of them speaks to me anymore and both dad and stepdad tell me that mom doesn't talk to anyone while stepmom cries all day and doesn't come out of bed.
I know I messed up and that I made things worse, and it tears me up inside.
Is there anything I can do to fix the mess? I feel like I've had everything and stupidly threw it away.

Should I make a choice between them or can I still fix this and make up with everyone?
Who should I choose between my mom and my stepmom?
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