5. Italian
At number five on our list of easiest languages to learn for Spanish speakers, we have Italian according to lexical distance. If you go for Italian, you will be able to communicate with around 62 million people in their mother tongue. But, since we are talking ease of learning, the number of people speaking said language is not of concern. According to the map of lexical distance, Italian will be much easier for a Spanish speaker to learn compared to French or Romanian.