Soltarte comes from the verb soltar, meaning "to let go" or "to release." The -te ending makes it reflexive, meaning "to let you go."
In the song, Dulce María sings, "No voy a soltarte," which translates to "I'm not going to let you go." This word is central to the song's theme of holding onto a past love and the desire to not give up on that connection, making it a powerful and emotionally charged choice.
Have you ever regretted not saying something to someone you liked? That's the feeling at the heart of "Pienso En Ti" ("I Think of You"). The singers can't sleep because they're thinking about a special person, looking at old photos and messages. They remember a specific moment when the other person's eyes seemed to say, "if you give me a kiss, I'll give you my life."
But fear took over, and the moment was lost. Now, they are filled with regret, wishing they could go back in time and find the courage to say everything they feel. The song is a powerful expression of longing and the hope that it's not too late to fix a past mistake and finally be with the one they can't stop thinking about.