To me there is a fine line between being genuinely nice and then crossing the line to make me red flag you. If someone has motives then to me that's the
reason for being nice and if you have to have a
reason for being nice or overly nice than you have motives. Whatever those motives may be...
Now I've always believed "Don't mistake kindness for weakness" because I'll give you the shirt off my back. But the moment you f*ck me watch out. Or like most said... if you do the same to my family, friends, or my Wife I can get pretty creative in ways to retaliate. Call it spiteful, call it stupid. That's just the way I am. I don't mess with anyone. So if I get messed with I take it even more personal
because I live my life by the "do unto others" rule. As I believe in Karma as well and it's all related. So you can "cover" your overly nice all you want. If the true motive in your heart is to deceive and trying to cover your negativity with a positive facade... you can't... You may deceive another person. But you can't deceive Karma.
Hell I'm dealing with a few of these types right now. One being a family member... with motives. And since I've been not buying the fake overly nice this family member has gotten frustrated and now is getting a little more pushy with me... instead of overly nice... So if you don't fall for the fake Bullsh*t they will eventually lose the nice attitude and show their true colors...
I also love the quote "I'm not as dumb as you look". --Stan Laurel (of Laurel & Hardy) one of the funniest people to ever walk the earth in my opinion!