Ya Krunk'd Floo
Moving with the swell.
If you are in love, I don't think you are limited to writing about love. You can expand your positive feelings to encompass things that inspire you and hypnotize you. Also, when you are in love, does it cause you to ignore the troubles of the world - poverty, natural disasters, despotic presidents, etc? If the answer is 'no', then you still have plenty to write about.
Here is a little list of things you could write about:
Race riots
Winter
Rain
Snow
Food
Trees
Music
The Common Cold
Truth
Your favorite word
Fruit
Basically, you shouldn't let yourself think that poetry is balanced on a love - hate axis with nothing in between.