Chain 5 and close the loop with 1 slip stitch (sl st). Crochet into the loop:
Row 1: ch 2, 2 tr, ch 3, 5 tr, ch 3, 5 tr, ch 3, 2 tr. Close the round with 1 sl st into the 2nd ch st from the beginning. Do not turn work.
Row 2: work 1 double crochet (dc) into the tr on the previous row and 1 htr into the next tr. Work 8 tr into the chain arch. Crochet 2 tr + 3 htr into the next 5 tr. Work 2 htr + ch 1 + 2 htr into the chain arch. Crochet 3 htr + 2 tr into the next 5 tr. Work 8 tr into the chain arch. Work 1 htr into the next tr and 1 sl st into the last tr. Ch 4 for a hanging loop and then break the yarn. Attach the end of the loop onto the sl st. Weave in the ends.
Crochet more hearts in the same manner.
Steam the hearts lightly. Attach the hearts to a light string.