The lyrics you mentioned are not from David Guetta & MORTEN's song "Dreams." The lyrics you shared are from the song "Dreams" by Fleetwood Mac, which was released in 1977 as part of their album "Rumours." "Dreams" is a song about longing, loss, and the desire for freedom. The first verse talks about someone wanting their freedom and the narrator acknowledging their right to pursue it. The chorus mentions that thunder only happens when it's raining, which can be interpreted as a metaphor for emotional turmoil or conflict that arises during difficult times. The second verse then shifts the focus to the narrator, mentioning their own dreams and visions that they keep to themselves. They express a desire to be a part of the other person's dreams and inquire if there are any dreams they'd like to sell, possibly implying that they are willing to support and be a part of their life. Throughout the song, the lyrics evoke a sense of loneliness and the contrast between what one had and what was lost. The repetition of "like a heartbeat drives you mad" emphasizes the emotional intensity and longing present in the song. Overall, "Dreams" is a powerful and introspective song about love, longing, and the complexities of relationships.