I’ll see your Sandy Patty and raise you Paul and Storm’s “The International Language”
Because our curse words come from that part of our language.
Our polite words come from the French parent of our language.
No it doesn’t. It means “I want you well” (as in: I want you a lot, I want you a good deal). Link.
BTW the transliteration on the Russian я люблю тебя in the OP is a bit sketchy. Ya lyublyu’ tyebya’ (stress on the last syllables) is more acceptable, although it is trough that the ‘ye’ in tyebya is pronounced as an ‘ee’ sound, ie much like the ‘i’ (и) in Russian