Romantic letter writing is often difficult for us to write romantic love letters our closest loved ones. Are you trying to boost the passion in your relationship? Only romantic messages can pump up that intimacy. Keep reading -- we polled 100 of the top experts in the field, and asked them to share their secrets on how to write those top notch romantic love letters. And surprisingly, it's a lot easier than you might think!

Be yourself: the number one tip from sex experts was to focus on just being yourself in your romantic letters. Express how you truly feel to your partner in your own "voice". Don't fall prey to schmaltz or try to play a "role". Remember, you are the one your spouse fell in love with, and therefore you are the one he or she truly wants to hear from.

Be specific: most of our top sex experts urged people who want to learn how to write romantic love letters to focus on specifics in their writings. Instead of expressing vague sentimental thoughts, say exactly how you feel and what you want to do with your partner, using concrete details.

Reflecting on the difficulty most people have with passionately expressing their love for another person, a prominent sex expert recently stated, "Most of us are trained to be repressed. We are so scared to show our true, burning, passion, because it is not accepted in our society." Writing a romantic letter requires the writer to set aside shame, fear and repression, and instead embrace his or her inner lover.

Be erotic: Roses, chocolates and teddy bears are boring, even passe as far as expressing true love is concerned. True, passionate love can be one of the most beautiful things between two human beings. So, don't hold back when you write romantic love letters - try to get into your deepest and most passionate thoughts and express yourself unabashedly.

Finally, you might try including a little something extra in your envelope. Deep red rose petals, a lipstick-smeared kiss, or an object that will remind your partner of something special you share are inspired ideas. Some sex experts recommend enclosing a photograph of a special time together in order to inspire your sweetheart's romantic memories.