I need some advice.... This guy asked me out and I said yes but I like this other guy and I'm very confused right now what should I do?

Well I think your best bet would be to be honest with him. Just tell him “I really like you but there also is another guy I think I’m interested in and it’s not fair to you if I have feelings for 2 people” something like that. Or you can just stay with this guy and forget the second one! Just chose whatever will make you happiest