I must say that I don't find this morally wrong at all. They've never met before and therefore they didn't grow up as a family. If they would have gotten a child together, that would have been a different story since you are knowingly risking to have a disabled child. That would be irresponsible.
I think it's sad that they had some good times together but aren't allowed to talk to anyone about it.
yes, I agree with you.