I need advice ....

So I've been talking to this guy he's so sweet and I tell him a lot things I don't even tell my own best friend.... And well he really likes me and he posted on Facebook he wants to be with me... Once we started talking I had a little tiny bit feelings for him yeah he makes me smile and I like talking too but there isn't big feelings for him... And I think he's gonna try asking me out ... But I dont wanna hurt his feelings :( he has a lot in common with me and he barely talks to anyone well that's what he says.... And I feel so bad I feel like a total asshole about it all... I don't know what should I do.... I wanna know where all my feelings went I started out liking him and than everything just went blank.... So whoever happens to be reading this can you give me some advice ?I really need it ..