Every time you look at the person you love, what runs through your mind? Think of words to explain how they make you feel, so you might use them through your poem. When they make your mind all foggy, write about that. Firsts. Was it love at first sight, or were you completely turned off till you got to know them better? Where were you? What details can you remember about the first time you met? The first time you went on a date? The first time you kissed? The small things matter, particularly in a love poem, so do not forget about them.
If you’re composing a love poem about someone, it is likely that they’ve had a fairly major impact on your life. In your poem, compare the way your life was before and after this person started playing a role in your own life story. Perhaps you were going through a rough time and they made it better, or you were always a happy person and they simply made you smile a little wider. Regardless of what’s your story, everybody enjoys being told how they matter. So make sure you let this person know how much they have changed your life for the better.
Do not worry about your poem sounding too sappy or intimate. Just be yourself, use your character, and write about the things that are a bit harder to say out loud. Yep, it sounds corny, but the very best poems are those that come from the heart. With regard to the format of the poem, developing a rhyme pattern or scheme shouldn’t be the primary focus. If a rhyme comes naturally, go for it, but keep in mind that some of the greatest poems do not rhyme.