Ukraine's dependance on Russia is economic not political. Ukraine has had a slimy bunch of corrupt leaders since 1992, and you can hardly make a case this was all because of Russia.
No, Ukraine depends on Russia's handouts, and practically adds 'stolen gas' to the line in their accounting books expecting it's a given they'll steal more.
The EU doesn't give a crap about Ukraine, and the Ukraine should wake up and see they're telling the hand that feeds them to shove off and begging someone too rich and snobby to give them a hand out.
Economic relations are fine, but if you're "independent" and want nothing to do politically then it is economic relations and economic relations mean no subsidies, which mean dependency. So, time to play and pay like adults.