Darkness or Light? Philosophy in Knights of the Old Republic.

And I also poured toxin into the water.

And this is not only an evil act but also an irrational one – the Republic might banish you from Manaana for this, and you will be prohibited from appearing there. Try to blow up the combines (or harvesting machines, depending on which you prefer).

Then I kept telling Bastila that the dark side is evil, etc... on Starforge, I told her that I love her...

I kept telling her that, and I even managed to get a kiss from her:)
And yes, by the way, you have 4 evil deeds, not 3. ;) :D :D