Put the chocolate and coconut oil in a glass bowl over a pot of simmering water to melt.
While the chocolate is melting, cut the strawberries in half from top to bottom. Slice a little "v" shape into the middle of each half, in order to turn them into hearts. Place on a paper towel-lined plate to dry for 5 minutes.
Pierce each strawberry half on a slight diagonal with a wooden skewer or long toothpick (to look like an arrow going through). Dip the strawberries into the melted chocolate, covering them entirely. Refrigerate until set, 30 minutes to 1 hour.