In simple words
The heart line is the top line across your palm, starting under your little finger. Palmistry links it with love and feelings.
How to recognise this one: The top line across your palm stops short, finishing below your middle finger.
What it means
You approach love practically and may keep some emotional distance until you feel secure. You know what you need and are not easily swept away. Others may sometimes see you as reserved, even when you care deeply.
Growth
Ask a partner what they need as well as stating your own needs. Shared understanding warms a careful heart.
Palmistry is a tradition of reflection, not a medical or scientific reading. Lines change over a lifetime, and no line predicts illness or the length of a life.