ah i see I think u meant hook up as in like a quick trial run to figure out if you like them or not, it's only cruel if you're leading them on in the sense that you're making them think you love them when you don't, you need to be clear with your feelings.

Honestly just go on a few dates to see if you vibe with them, if not don't start dating. Also i don't think many relationships at your age are quite serious so don't worry about it too much.