What do you smoke, bro? ; )
Show me a treaty where Ukies wanted anything to do with you.
But look simply at your logic:
The ukies wanted it, then changed their views
Ok, let's assume we wanted it (what a BS!:), so we should have had the rights the same as you, before we "changed our views" - correct? Yes. Then you say:
Or you think give away rights to someone who just fought against you
How can you give the rights (which according to you should have been there in the first place) to people (who are already in union with you wilfully with the same rights) and now fighting with you (what for?) and you claim that it is preposterous to give them the rights? How can you give again something that is already there?
So either you lie (obvious!), or there was a treaty and one side didn't keep up to its promises. In 1569 there was Lublin Union between Lithuania and Poland. I see no Ukraine there and Ukies saying: "Yejjj!"