Latino and Latina are Spanish words that American English speakers have adopted in the last ~80 years due to the significant intermingling of Spanish and English speakers. Their use spans a spectrum of Spanish-only speakers, bilingual speakers, and English-only speakers. Not only does the English word "Latino" (my eyes roll typing that) have an etymological relationship with the Spanish word "Latino", their etymologies haven't even diverged. English speakers who took a Spanish class in high school even pronounce Latino in the Spanish way, "lah-TEE-noh" instead of "luh-TEE-no", because they think of it as a Spanish word.