I gave the good guy a chance but the feelings never came

Posted here 20 days ago about accidentally sleeping through a date. I've been on 7-8 dates with this guy. He's genuinely a green flag—kind, intelligent, stable, nerdy. and we share a lot of common interests.
The problem is I still don't feel anything. I kept hoping attraction would grow, but after our last date I realized I just can't see myself dating him.

I was honest and told him that if we continued, he'd likely be the one getting hurt because I'm quite detached from the outcome at this point. He appreciated the honesty, said he wanted to give it more time, and told me that if my feelings don't change, it would be his responsibility to handle the’breakup’ because he's choosing to continue despite knowing where I stand.
The difficult part is that saying no to a genuinely good person feels much harder than saying yes. I really like and respect him, but I don't think I'll ever be romantically attracted to him.

I want something peaceful and romantic and i’m sure this guy would be all of it but it’s just that I don’t feel a thing for him. I don’t want to continue it but I really feel bad for him.

Has it happened to anybody? How should i deal with it?