Intertwined Mishaps

I have one on my forearm from the oven
And one on my thumb from the car door
One on each bicep from a bad reaction to medication
Too many to count on my knees
One on my big toe from a piece of glass
Three from surgery
Little ones all over from this or that
And then there is this one
The worst
It's the one you gave to me
The scar of where my heart broke