It’s happened to almost every man, I think. The short answer is this isn’t your fault and you shouldn’t feel awful. Even if you had actually “led him on” men are used to indecisive women and if you’re his friend he probably won’t resent you for it. Just let him make his move and be honest with him. First be honest with YOURSELF so you can be sure of whether you want to reject him (important; don’t neglect that part). If you turn him down, DON’T lie to him about why or make up bs excuses. The rea
son being that if you tell him something that’s an obstacle he can overcome, he’ll move heaven and earth to do it. That said, of course, if you DO have a specific reason and it CAN concievably be overcome, then that’s not a bad thing. So giving your reasons is totally ok if they’re true. But if he just needs to give up forever, then tell him so very clearly (exercise caution ⚠️⛔️; there’s no good way to reverse that)
Common misconception. It’s not going to ruin your friendship. Men aren’t women. We don’t resent people for wanting us, so we don’t think of romantic attraction and friendship as a zero sum game. You can have both, one, or neither. They aren’t mutually exclusive. You’re already not sleeping together(right?). So from his perspective, things can only get way better, or (if you reject him) remain the same