eeehhh... i've had that feeling. but the guy i'm with right now isn't like that. he's just sweet enough...as for ANYONE, yeah i've felt that way before. it either looks fake or too sweet, depending on the person. for example, my cousin (who's 19) is going out with this guy (who's 28 ), and when i met him, he acted WAY too sweet. and now everyone (exept my cousin) thinks he's a total ass, which he is.
my aunt is going out with this guy right now who is totally weird, and he never gets mad at anyone...and he acts too sweet, and he seems fake, AND he flirted and got touchy feely with the girl cousins of mine at our family reunion--including ME. so i know EXACTLY what you're talking about.
edit* had to fix that 28 in parenthisis cause it made a smiley lmao