Aren't you supposed to be able to adopt two children? If so, how come I get the option to only adopt 1?

You adopt 1 at a time.

Soooo.... 1 ever per playthrough? One, and then proceed to find another and adopt he/she? Because on multiple saves I can only adopt ONE, period. One at a time sounds like I should be able to adopt a second. I swear it was stated you could adopt two.

It is, and you should be able to adopt 2. Are you at the orphanage? I haven't killed Grelod, so I am not sure of the procedure there. You should get the option to adopt a second, unless you only have 1 bed available in your house. You have to have either the bedroom wing with 2 single beds WITH chest for each one, or the 2 singles in the main hall WITH dresser between them. That would be the only thing I know of to stop you from having 2 children.

That's so lame..... D: Is there ANY way around this? I guess this is what is preventing it. Would moving them into one of the NON HearthFire homes allow me to adopt two? If not it is fine, your answer helps a lot. I wish I could Demo the homes, but I don't even get that option.