Lessie,
Do you feel like you deserve to be treated badly? Or have people in your life been like that? What I am getting out of you post is that there is a part of you that wants good things, and a nice sweet boy who will treat you right, but another part of you steps in and tells you that you don't deserve that. Lessie, the part of you that wants good things is healthy and is right. You do deserve good! That's the real you. Can you tell that other part of you that it is wrong? Stand up to it.
Medication for depression can help, but the chemical factors are only part of it. Depression involves thoughts and feelings too, and it takes some work to change them. Sometimes we need help to do that. Do you have a therapist to help you with that? If not, my suggestion is to ask for professional counseling. You can use an ally to help you to strengthen the healthy part of you and be able to stand up to the part that is sending you the negative messages. And the sooner you win this battle the better - before you do get stuck in an abusive relationship.
<font color=orange>There is an easy answer to your problem that is neat, plausible, and wrong.
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__________________
“We should always pray for help, but we should always listen for inspiration and impression to proceed in ways different from those we may have thought of.”
– John H. Groberg