Probably. Both languages have words taken from Bulgarian, and Latin, tho.
Not at all. Russian is like a softer, messed up version of our language. Bulgarian is rougher, and we read words the exact way they're written, unlike Russian. The Cyrillic alphabet was based on the Early Cyrillic, developed in the First Bulgarian Empire, you see.
Take this last name, for example: In Bulgarian, we say Ivanov. In Russian, they say Ivanovic. See how they change it? Let's go a little further:
Здравей/те (Zdravei/te) - Hello. The -te is added for plural, or to make it formal.
Здравствуйте (Zdravstvuite) - Hello, but in Russian.
I check 9Gag every day. It is currently flooded with either GOT posts, or anything World Cup-related.