trust your gut. generally you can tell if somebody is lying or not.
btw, i am a vampire. i must take energy from other things. it is what it is.
how to become one: there are spells/rituals that can accomplish this task. but dont do it. its fun at first, but after a while, it is a burden. how i became one is just... well. it sort of just happened. then i did a spell and it made it worse. but idk. i woke up one morning and then a week later, i started to drink blood from friends cuts. a lot, without getting sick. yeah so this sounds extremely fluffy. but this is part of me. for more on how vampires are, read my bio on my profile.
dont do a spell to turn yourself into something else. it sucks. it is not fun in the long run.