Te amo is the most common way to say I love you in Spanish, but used only between couples. Te quiero means the same, but used for friends
Te Quiero vs Te Amo: Don't Say the Wrong 'I Love You' in Spanish
Te Amo vs Te Quiero: How to say I Love You in Spanish - LingQ Blog
Te Amo vs Te Quiero: How to say “I Love You” in Spanish, by LingQ.com
Te Quiero vs Te Amo: How To Say I Love You In Spanish
Premium Vector Calligraphy phrase te quiero on spanish i love you vector valentines day hand drawn lettering
How to Say I Love You in Spanish in 142 Romantic Phrases
Bilingual Kidspot - Ways to say I Love You in Spanish, and other romantic phrases! Read More: spanish-romantic-phrases/
I love you in Spanish has multiple meanings, learn them all
Spanish vs. English: A Spectrum of Feelings