Trust is so easily broken and so hard to get back...I'm so very sorry your past partners deceived you. Take some time to find out what you need/look for in a relationship and maybe seek some outside help/perspective. Do you have some trusted friends you can talk to, or maybe even access to counseling? Sometimes bad relationships become a repeating pattern and you don't need to end up with the same type of partner in the future.
And I know when I get treated poorly by someone who I love, my self image suffers greatly. In turn, I start to think that maybe I deserve no better. Well I'm here to tell you that you do deserve better. Just work on getting back on your feet first...and don't lose hope.