Hi ya Flashback
Dreams reflect our deepest conflicts as well as our fears. You can think of a dream as being entirely personal to us, any emotion or thought that arises in a dream comes from our unconscious mind, which uses symbols in a way to convey the energies of our total being. Our dreams use other people as symbols to express parts of our personality that we may or may not be aware of, males reflect such traits of our thinking rational mind they convey our thought processes our outwardly behaviour, beliefs and attitudes, it is the action taking energy within us. Females on the other hand express our receptivity our feelings and intuitions as well as our spirituality.
I get the sense that the issue at hand is one of feeling loved and cared for. When we feel unloved or cared for it leaves a chasm between our mind and hearts and we tend to close down or start to feel detached and emotionally cooler. Overtime we start to grieve for this lost love in our lives and when it is shown to us again through others care and understanding we realise what we have been missing which evokes in us an emotional response as the heart again begins to open.
When we stay stuck emotionally for too long in any emotions that we percieve as being negative there is a lack of flow of energy in our lives and nothing moves, imagine water that pools for too long it starts to become stagnant and will eventually turn into a dark liquid, this is a little like what happens to our emotional selves (which incidentally the fluid like nature of water is the symbol for our emotional self). Im wandering if the tears you cry in the dream symbolise the grief of lost love. The blood usually relates to our lifeforce or energy if you like, and when we feel drained emotionally due to experiencing something that is not supportive of our needs then we lose our energy. When we are stuck in anger and resentment we also deplete our energy. Crying tears of blood and bleeding around this issue seems to impart the idea that you are stuck in an emotional response within and it is depleting you, ie feelings of being ignored/rejected and your anger around this is what is depleting you. Imagine how you feel when you are experiencing feelings that are lighter, Joy, happiness, etc we usually feel energised and active, outwardly reaching and communicating. When we are stuck in anger and feelings of rejection we close down stop reaching out we feel needy this depletes our energy, and bleeding in dreams will reflect this internal state.
However there is also a deeper issue at hand, dreams are ultimately all about the dreamer and your dream indicates that you create these experiences in your life through rejecting your own self though this may be hard to see as it is often something we do unconsciously. Im wandering if your ex girlfriend is reflecting a part of YOU that does not value the way you think/feel, how do you value yourself? asking yourself this question will help you to see where you maybe lacking in self love 'ex girlfriend' and will show you the real crux of your situation as it is now. How we feel about ourselves inside mirrors in our relationships outside and often we project our own relationship we have with OUR SELVES onto external situations. I hope this makes sense

Good Luck Malakeli