Recognition of foreign unions and adoptions, yes, I don't think there's anything about offering them yourself. It's not like being gay would be illegal in Ukraine, it's that only ten years ago social attitudes were quite negative towards queer folks but those have been changing at breakneck speed. Registered partnerships are in the pipeline and have majority support, marriage at least for now is out of the question because it'd require a change to the constitution and those aren't constitutional in war times.