First of all, you must make a preamble for starting any topic. And then you must move slowly towards the topic in your poem but that must be unnoticeable that you've come to the original topic. In this way you can start the love poem.
What Is The Best Way To Start A Love Poem?
You don't have to do any preambles or anything like that, just say what you feel with the most beautiful and best words you can find. Be sincere and you will have a great poem.
First of all, you should think of the best words that relate to love and like you said, just move slowly into the topic of love
I think maybe you should talk about how hard it is and how much its hurts then talk about how much it feels good to be loved by someone