Blood types and sun signes

I had an interesting talk with my sister about how people's personalities differ according to your blood type or sun signe. I am a cancer. Apparently cancers get a long well with capricorne, sagitarious, piciece and Taurus. When I think about most of the people I'm closest with tend to be capricorne, sagatarious or piciece. ( best friend, boy friend and so forth ) I believe that sun signes should not define us however they do affect our personalities. Furthermore blood types have an even greater effect on our personalities. I am B blood type and very slow and spacy. I have a hard time making decisions and I am too relaxed and easy going.  In fact my family are all B blood type. It takes forever to make a decision when we gather together as a family! Lol do you know what blood type you are? If you look it up it is surprisingly right on to your own personality.