You say your sorry but your not.
I asked for a knight in shining armor not an idiot wrapped in tinfoil
I don't want to love a man that makes excuses and gives me roses to make up for it
Roses don't fix anything
You may think they do but they don't
So I'm gonna do myself a favor and throw away your roses and your love
Because you're a pathetic excuse for a knight
I may miss you for awhile but I will let you go and get on with my life
So I can find my real knight in shining armor
Guys appreciate a reason for being dumped, at least. I think you did that to some extent so that's good. The roses thing, someone tells us that women like them, appreciate them, let you know we care, etc. The majority of guys have no idea what makes women tick so don't assume they do.
That would be "you're" as in "you are" as opposed to "your" which is a possessive form.