They were coming with a rosebud held in their fist; when I asked what it was, they made an excuse saying it was a heart.

There is a delightful touch of playfulness here: the beloved approaches with an unopened rosebud tucked inside their fist, and when asked what it is, coyly pretends it is a heart. In classical poetry, a tight rosebud is the perfect metaphor for a heart—crimson, delicate, tightly wound with untold emotions. This teasing excuse leaves the lover enchanted, wondering whether the beloved holds their own coquettish heart or has captured the lover's heart in their palm.