A love scar is any
minor physical injury, such as scratches, cuts, bruises, hickeys, or bite marks, caused by any type of sexual activity, not intended to directly harm the person (typically accidental; marks left by things such as toys and BDSM tools are usually not included, as it is more associated with
lust than love, and it is an intended injury). The sexual activity must be mutual, hence "love" scar. In the
case of non-mutual similarities, see sexual assault.
Anon A: Hey, did you get a knife to the back or something?
Anon B: What? Oh, no, it's a love scar, from my
girlfriend.
Anon A: What's that?
Anon B:
Check Urban Dictionary.