I'm 25 and my last "relationship" did not even lasted a full week. I ended it because my of low self-esteem. Is there a hope for me?

I've been in two relationship in my lifetime, all both ended because of my very low self-esteem. My last "relationship" did not even lasted a full week and girl was head over heels for me but I rejected her.

I'm 25 and my last "relationship" did not even lasted a full week. I ended it because my of low self-esteem. Is there a hope for me?
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