Better to have never loved at all?

With men...you just wait to find out what is wrong with each one. You know there's something...because there always is...you just wait to see if the guy will hurt you more or less than the last.

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Vulnerable- Susceptible to physical or emotional injury
I think that vulnerability is one of the worst feelings. And the hard part about that is that in order to love...we need to make ourselves vulnerable. Once you have made yourself vulnerable and love...if you have your heart broken it makes it harder then next time to open your heart. But without vulnerability you can't love...you can't live life without feeling life. So maybe being vulnerable is a strenth...if we can't be vulnerable we won't find love.

“Real love hurts, real love makes you totally open and vulnerable. Real love will take you far behind yourself, and therefore real love will devastate you. If love doesn't shatter you, you will not know love"

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How am suppose to believe that sheer suffering teaches. If it did...wouldn't the world be wise...since we all suffer?