It passed too quickly for me to find the prompt on One Stop Monday Form. So here is an Octain for Tuesday, instead - eight lines of eight syllables, with a rhyme scheme of A b b , a c/c a , b A with an internal rhyme, c/c, in line five.
In all the days I spend with you,
each moment forms a memory
which betters any fantasy.
And in my dreaming, it comes true,
it lives again. Its rich refrain
accompanies the things I do,
with everlasting melody
of all the days I spend with you.