let him go,but don't let it go

it's hard to just forget about someone that meant something to me before..sure,,he's gone now..but that doesn't quite mean he's completely out of my life..he once made such a great impact to me..he once made me feel special..he once loved me..it's sort of hard to let all of my emotions go of one person because i've shared so many memories in the past..like people would say:

"RELATIONSHIPS MAY NOT LAST,BUT MEMORIES DO"