Should I say something?

Charlotte • Hoping to try for baby #2!
So my partner and I are TTC with donor sperm. We were talking to a lesbian friend of ours recently and she told us her OH wants kids but she definitely doesn't. Then she said something  about how her OH can't have kids anyway. I asked her about this and it turns out her OH has PCOS and had been told somewhere along the line that meant she'll never have children. So I told my friend that actually women with PCOS can have children with the right kind of treatment....
And she asked me not to tell this to her OH because then she'd want to try.
I find this all quite upsetting because it's like my friend thinks she can control whether or not her partner tries to have children.
Should I say something?