There is not best 'sign' of the zodiac (although ego Leo may
think they are the best 
)
Sun Sign (which is your astrological sign) only form part of the
story - to me, everyone's entire reactions and behavior towards
love are explain with 3 theories: Astrologically, Spiritually, and
Psychologically. 
Scorpio are possessive, bad temper, etc, got alot to do with their
ruling planet - Mars. - the same as Aries. (Aries are just as
heated, but likelihood is temporary and not lasting, whereas fixed
aspect of Scorpio tend to bear grudes for longer period.) For
scorpio woman, I only know one friend who has little temper,
although when she PMS/etc, the most she just look 'sian', while the
rest of the Scorpio woman that I know and pretty good friends have
this tendancy of sharp words, irritated easily, etc. (But
nevertheless they are nice bunch).
P.S: Scorpio are generally faithful lover (due to fixed aspect -
like Taurus and Aquarius) - so its a good thing isn't it? 
Cheers
