Well, I think it's more along the lines of Cancer & Pisces.
Especially if Mars is in either one of those signs, considering,
as Cowboy Up! just mentioned, aggression is basically a
Mars type of issue. Although, that also can be a Moon type
of issue as well, since the Moon is in charge of emotions.
That includes anger. A stronger possibly of all this would be found
in a Moon/Mars connection (aspect, I mean.), such as Moon conjunct
Mars, for example. That's as far as the aggressive side goes.
The rest of this is clearly explained here :
http://www.astrologyweekly.com/astrologi…
The passive would be more along the lines of Venus being in the mix.
After all, Venus is the planet of love, not war (so to speak). Venus hates tension.
Here's more on the Venus (passive) side of things :
http://www.astrologyweekly.com/astrologi…
I hope it's not too long for to read & I hope this helps to clarify things more for you. :-)
I.E. - the above explanation is mainly in my own words, as best as I CAN explain it.
Again, the links provided have more information about this topic. Very imformative.
Enjoy ! :-)