Emotional pain; the horrible feeling of a black hole sitting in your chest where your heart should be. Other feelings one may experience include a inability to catch one's breath and getting all choked up. Usually occurs after a breakup or when one is worrying excessively about something.
1. My boyfriend just broke up with me, and I can barely breathe with this heartache in my chest.
2. I care aout my friends so much, and sometimes I worry enough so to give me heartache.