Marry Me!

A note titled "Marry Me!" can be found on the body of a female wastelander under a bench in the little "park" directly southeast of the Nuka-Cola Plant. Upon resurrection of this NPC via cheats, she immediately turns hostile.

Transcript
For what it's worth, this note has the edid "ExtraCorpseNote10", and there are no other mentions of a "Kevin" in Fallout 3 Notes or Messages.