How do i be more sensitive? My SO tells me i’m heartless to things and he doesn’t like it...

example (If someone broke up on the telly and their crying i say aw don’t worry plenty more freaks in the circus 🤷🏼‍♀️)

I’m the sort of woman that doesn’t do emotions when it come to being hurt or anything i don’t show it i keep it bottled up i’ve always been that way but it’s becoming a problem in my relationship and i don’t know how to be more sensitive and emotional