"I Could Fall in Love", the first promotional single, was written by Keith Thomas and is a soft rock, pop, R&B and soul. "I Could Fall in Love" is written in the key of E major and moves at a moderate 86 beats per minute. Selena's vocal range in the song spans four octaves with music notes F#3-A4. Its lyrics are about a woman who is in love with a guy who does not know about her true feelings for him. She tries to tell him, but is afraid of rejection, she decides not tell him. According to "The Billboard Book of Number One Albums", "I Could Fall in Love" was chosen as the "best song" off of "Dreaming of You" and "... could melt the hearts of millions around the world". Kathleen Tracy wrote that "I Could Fall in Love" and "Dreaming of You" are two hit "ballads". James Hunter of "Vibe" stated that he liked Selena's passion that she used to record "I Could Fall in Love". Hunter also stated that the song is a "masterpiece", while also stating that because of Selena's death, it was hard to listen to the song without crying. After Selena's death, "I Could Fall in Love" became a popular wedding song.