A spider might represent a minor irritation or a serious danger. So the dreamer should consider other details in the dream for hints about a specific meaning. Otherwise, generally speaking, a spider seen on a person would represent a danger to that person.
what dose it mean when i dream im looking for my boyfriend in my dream but i never find him
No it is not true. Spider may also mean threat. It may also mean fears.
Dreams reflect a person's concerns, they are not mystical portents of the future. If you dream about your boyfriend's son being mean, you probably are a bit worried that your boyfriend's son may turn out to be mean.
It does not mean a thing, its just a dream, you can not control what you dream about, that's why so many don't make sense.
you might be pregnant!
You still have feelings for your old boyfriend.
you are frightened something awfull is about to happen
This dream suggests the dreams has a jealousy issue. It provides no information about the boyfriend's feelings or behavior.
You DONT
It means you were looking for your boyfriend!
The dream suggests that you feel that your boyfriend has a negative or dangerous side to his personality. The dream is the product of your own imaginative intuition; it does not give you any sort of insight into your boyfriend's actual thoughts or feelings.
This dream suggests that the dreamer continues to hold an emotional attachment with the ex boyfriend.