Answer:
just be honest with him... tell him why you can no longer date him... dont beat around the bush... even though he maybe hurt when you tell him.. its better to be truthful rather than living a lie..
Answer:
Sounds like high school to me (or maybe I'm just projecting). If so, and if you can't drive: Go for a walk with him, so that you´re not stuck in either of your houses afterwards and so he doesn't have to go from a break-up to class. Ideally, he should be able to retreat quietly afterwards to his own house. Many people don´t really like others around when they´re newly sad. If his house isn't in walking distance from where you tend to meet him, a phone call *might* be a good idea. It really depends on the situation.