[header] How to tell a boy you aren't interested in a relationship [title] Choose a good time and place to talk. [step] It's best to have the conversation in person, especially if the guy is a friend. This way, you can make sure there's no confusion and address any questions he might have. 
Make sure you pick a solid time and place to talk. [substeps] There is no good time to tell someone you're not interested, as the conversation will always be somewhat sad.