My friend sent me this cipher:
etsitsiduamuqmuessenon,tsesumissep"omaet"orpdouqmuiterpteangamecovtivamalcxete
She also said it roughly decodes to:
And I screamed for whatever its worth, 'I love you!' Ain't that the worst thing you've ever heard?
How is this cipher created? How would I be able to solve other ciphers like it?