To answer the first question: I believe that people can be loved even if they do not love themselves. I know that I am loved, yet I don’t love myself in the slightest. And then there may be some people who love themselves so much (too much) that they make themselves unlovable to others.
To answer the second: Yes, I do believe that people can fall in love with someone else and then be taught to love themselves. If you fall in love with someone, often that person makes you appreciate yourself more and in time you can grow to love yourself like they love you.
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