My boyfriend said that my vagina smells/tastes sweet?

At least it doesn't smell bad to him. Usually if you have a foul smell then that could indicate an std. Unless you develop other signs or symptoms of an std you probably don't have any thing to worry about. UTI's don't usually do any thing to make you smell sweet down stairs. They typically cause burning pain when you urinate.

not at all, the vagina has a natural odor--like a pheromone to attract guys. Don't worry about it unless it gets to powerful and starts to smell fishy--could be an UTI but that is not what this smell is coming from you. He can stop it if it bothers hm.