What is the meaning of 18 red roses?

Here are the meanings of roses:

1 Rose - Love at first sight; you are the one

3 Roses - I love you

12 Roses - There are a dozen ways I care about you

18 Roses - I am sorry

24 Roses - Can't stop thinking of you - 24 hours a day

36 Roses - A romantic attachment unlike any other

48 Roses - An unchanging and unconditional love

99 Roses - I will love you for as long as I live

100 Roses - Devoted to you until we are at a ripe-old age

108 Roses - Please Marry Me!

999 Roses - Everlasting and eternal love