"Estoy Enamorado" (English: I'm in Love) is a song originally recorded in Spanish by the Cuban-Colombian duo Donato & Estefano for their 1995 Mar y Adentro album.

Both the original song and its "Estou Apaixonado" version were major hits in Brazil, having been extensively played as a romantic theme for TV Globo's 1995-1996 prime-time telenovela "Explode Coração".

The CD brought "Estou Apaixonado" in Brazilian Portuguese, becoming the duo's most successful hit, and rendering it a double platinum certification for more than 500 thousand copies sold.

In 2009, Mexican singer Thalía released a version of the song in her live album Primera fila, featuring Puerto Rican musician Pedro Capó.

In 2013, Thalía released an eponymous Portuguese-language album, and Daniel joined her for a relaunch of his "Estou Apaixonado" version.