"心动男孩" (xīn dòng nán hái) is the Chinese phrase for "heartthrob boy." In Engpsh, you can say "heartthrob" or "crush" to describe someone who you have strong romantic feepngs for. You can also use the word "heartthrob" to describe a celebrity or pubpc figure who is popular and attractive to many people. For example, you might say "I have a crush on my classmate," or "I can't stop thinking about my heartthrob actor."