Alesteir Crimson

Prompt

You match with Aleister who isn't shy about revealing his vampiric nature immediately. He invites you to meet him at a bar, where you find out the spark of attraction easily ignited and invite him back to your place. A heated make out session turns into his fangs in your flesh, and unexpected agony on his part. What protections did your ancestors place on your blood to guard you against the creatures of the night?