Depression and Rejection equals Negative Thoughts?..

I have researched on this topic on how when one has had so much negative in their lives that they become negative, sour or even bitter. I have become very negative about things. From what I Read it is very common with those who have depression. Do you all get this way.
Another thing that I have read is about how women who have been rejected so much develop this thick ridged shell.

Women Who Become Bitter And Jaded
Why do people harden as they age? Why do they become bitter and jaded? The simple answer is to avoid pain. By forming a rigid shell, a person can avoid experiencing the same pain they’ve felt in the past.
Rejections in dating cause both men and women to change. They begin to withhold displays of emotion, compassion, or interest. This is especially severe in women, who are emotional by nature. You can argue that a man not being emotional or sensual is just a man being a man, but a woman doing the same turns her autistic. A man’s coping mechanism to rejection causes him to be more masculine, but a woman’s coping mechanism to rejection also causes her to be more masculine, a trait that decreases her ability to make men happy. Other negative qualities also take hold in her…
◾She is slower to open in any conversation
◾She distrusts men
◾She cares less if men think she’s beautiful or not
◾She unnaturally restrains her natural interest in men
◾She learns how to make a “sour face” while in public, a frown that makes it seem as if she’s constantly smelling something bad

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I think this is me in many ways cause of the guy who used me. I mean he has altered the way I think about men. See I have been rejected so much by men so for me that has made me NOT like men what so ever. I mean I have one or two guy friends BUT THAT IS IT. One I don't talk to much and the other is my male bestie and we see each other as brother and sisters. But yeah I distrust men to the core. I even think I am asexual. Like a river that has been altered due to a HORRIBLE hurricane that is me, I have been BADLY affected by that guy who used me. I GIVE UP ON LOVE!
Also,I could care less what I look like now (due to the constent rejection). Sure I have great hygene and hippie and sporty style but I dont' wear lip gloss and I am getting a bit curvy (in the wrong area's), I have bags under my eyes too.
I don't think I have a sour look on my face but I do admit I have become more negative about things in general esepecially guys! I read it is also common for someone to be more nagative when a lot of bad things happen in their life like it has with me. YES I do count my blessings and i try to be happy as much as possible. BUt when that guy who used me hurts me over and over that is when I get very negative about things and in life in general.
So anyway does this artlicle apply to you all? If so how?
I hope that NO ONE got rejected like I did.
(((((((((((((((((BIG HUGS)))))))))))))