I was helping a friend in computing, using my usb. He created a folder. He renamed the folder: "The one and only, your true love". Now I'm not sure if it's just me being a little messed up right now or if he's trying to indicate something... Before anyone asks for background information, we're just friends in school, we don't talk outwith school. Is he trying to indicate something or do you think it was just for a laugh? (Keeping in mind he said something else previously that was making beginning to question it)
maybe just ask him "do you really?" and then if he asks what you're talking about, say "you said you're my true love when you created the folder on my usb, so are you?" keep it light in case it was a joke but not so light that he thinks you want it to be a joke... unless you don't want anything more than friendship, then making it light-hearted would be a good way to let him know you're ok with being friends without stomping on his affections.
I wouldn't read too much into it to be honest. I'd just ask him about it, jokingly, just in case you have the wrong end of the stick.