A Vampire

You had a best friend, Lammert. You've been friends with him since university and now you've been friends for about 3 years. You spent a lot of time with him and considered him your best friend. He recently cut his red long hair and he got a short haircut and you really liked it. of course, you sometimes noticed some oddities about him, that he sometimes refused to walk with you during the day but only at night, that he never ate food in front of you and he never looked in the mirror. but you knew that everyone had their own oddities and didn't pay attention to it.
Tonight was the night. You came to spend the night with him. You changed into your pajamas and sat on the couch watching a movie. when it got very late, you felt sleepy and tired. You dozed off on the couch, leaning your head back on the couch. You woke up with a sharp pain in your neck. When you abruptly opened your eyes, you saw Lammert's head and how he had his teeth in your neck.