Your heart can be broken by things or someone other than a bf/gf. A death can break your heart. So can wanting/ deserving something like a job and seeing someone else get it. Putting your heart and soul into a project and having someone in authority tell you it's not what they wanted ... But if your heart is that easily broken, you're "wearing Your heart on your sleeve"!
Yes. I was married to someone who I loved for 14 years and he would never buy a house with me, didn't care about the daughter we had together and threw many temper tantrums if I ever wanted to leave a job. Then he remarried an illegal who doesn't have to work, supports her illegitmate brat and pays for all her school, vacation, house, cars and life and she doesn't have to lift a finger. "There is nothing fair in this world."