It depends if he was all: "Heeey, babyyy!! I was just callin ta see if Ты are doin' good, Ты know, cause I needs me some money."jk or: "Hey, (name), I was just calling to see how Ты were."
Either way, it shows that he cares for Ты and even if Ты dont get back together, he still will. Ты make the decision. Ты know he cares, do Ты want to be еще than just friends? What is the first answer that pops in your head that your concience doesnt question?