Retain / In Tear

Sam is planning to tie the knot with Hailie, his longtime girlfriend, a girl who looks remarkably familiar shows up. Sam exhausts his mind to find traces of this girl, but nothing could be recalled even with the help of CERA - the external database of life memories. Coincidentally, Sam finds evidence of the past this girl and he shared, and in this version of universe, Hailie was only a tag along friend. We live by our memories, but does that mean when the memories are erased, we could also get rid of the happenings that have struck our souls?
(Source: Viddsee.com)