As a gay woman, who had a great upbringing and a lovely family I still really struggled with knowing if my parents would be ok with me being gay. I so wish they had said explicitly things like you can have a girlfriend for girlfriend, we won’t mind or somehow conveyed that message to me.
my best friend is also a lesbian and she said exactly the same.
so please don’t assume that your kids will just ‘know’ it is ok because you love them and have a close relationship