For those of you who have gotten to the later parts of this path - the "love chain" and the "other" are kinda backwards so it's confusing.
The decision fork is whether you say "protect shurik" or "take advantage of the situation". The latter, followed by NOT sleeping with her after club puts you on love path. The former, followed by YES sleeping with her after club puts you on the non-love path.
The other 2 permutations (Protect --->dont sleep with her, take advantage -----> do sleep with her) result in a game over for her character.
So you can do either path, but I think the "love path" has more scenes in the future.