Vampires mate for life, so once they find a mate they stick with them, however marriage is not exactly traditional in vampire culture, however more modernized vampires have been known to participate in weddings, though this is still very rare and is practically always because their human lover requested it, some of qualifiers for a vampire in regards to finding a mate are that; the partner must must be 18 years or older, they must be in a somewhat fit state, they must desire to live a long life or to live forever, and they must be the opposite gender (not because vampires are inherently anti-LGBTQ or anything, in fact most vampires male and female alike are inherently bisexual, rather this because of a vampire's innate desire to pass on their genes to the next generation).