Scary but cute: 

Scorpio, Cancer, Aries

Nice but rude:

Leo, Libra, Gemini  this is probably true

Blunt but shady:

Sagittarius, Aquarius, Scorpio

Weird but cool:

Virgo, Pisces, Capricorn

Confident but insecure:

Gemini, Leo, Capricorn  this one is super true!!

Friendly but shy:

Taurus, Virgo, Cancer

Awkward but smooth:

Leo, Aquarius, Aries