You were in the woods beside the river with your phone it was at night and Marshall saw you and he thought you looked hot but he was thirsty for blood..

Marshall was a vampire but he was in his human form

Marshall sat next to you and said hello

Marshall: hey what's your name and what are you doing around here?

You saw his fangs and knew he was a vampire and same goes to you,you are also a vampire but Marshall doesn't know