In this dream, the blood could represent your health. Carrying the blood in the bag might suggest that you are taking chances with your health.
This dream suggests that the dreamer feels dirtied or polluted by his/her own words or behavior.
Your dreams are always about your own life. So the "someone" in this dream represents yourself, and the dream is about your own guilt or anxiety.
The dream reflects your own attraction to this guy, or your interest in guys in general. Your dream only expresses your own thoughts and feelings; it does not mean that the guy (or any guy) is thinking or dreaming about you.
The image certainly has negative, and rather alarming, qualities, but the actual meaning of this image depends on its context in the dream and on your own emotions while dreaming. For example, the dream would have one meaning if you unexpectedly stumbled on the black bag and innocently looked into it, but might mean something quite different if you were given the bag by some other dream character. In the one case, it might illustrate curiosity and mystery followed by disgust, perhaps referring to some area of your real life where you are curious about personal or family information. In the other case, the dream suggests a threat and possibility of danger, and the need to be very cautious about whom to trust.
This dream represents feeling that one has no place of one's own.
The dream only means that there is something going on in your life and you feel unprepared for whatever it is that you are expected to do.
The dream expresses your own deep emotions. It is very possible that you have been in denial about your boyfriend's unacceptible behavior, and that your own mind is using this dream to nudge you into admitting that the relationship needs to change.
The someone in this dream probably symbolizes the dreamer's own self. The dream expresses the mind's effort to console the dreamer.
The stranger in your dream is a symbol for some part of your own self. The dream is showing you that you are hurting your self without realizing it.
This dream is the effort of your mind to get you to pay attention to your own emotional needs. You are the person who is depressed.
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Someone else's dream is not about you at all, but about that dreamer. If someone says something about you in THEIR dream, "you" represent that other person in their own dream. On the other hand, if you dream that someone warns you about your partner, that is quite different and you should pay attention to your own dream. In this case, the "someone" in your dream represents your own mind which is trying to get you to recognize that your partner is not as wonderful as you would like to believe.