Aries are leaders and self-centered. Fire signs can seem heartless because they're so focused on themselves and their goals.
Aquarians are aloof and unconventional. They'll quickly shut you out if you don't like their quirkiness, even though they're not heartless.
Capricorns love order and being right. Earth signs put logic before emotion. Even though they care about others, this can make them seem cold and misunderstood.
It's not surprising that another fire sign who loves success would sometimes be seen as heartless. If you don't share their vision, they'll forge their own path and ignore you.
Geminis are social butterflies. They can act differently depending on who they're with because they're around so many people.live in a world of their own rules and reality
Scorpios, powerful earth signs with cutting intellects, are the coldest and most closed-off signs. They use silence and sarcasm often.