Opinion Poll

So... my good friend gave her cousin my number to give to one of her cousin's clients in the hopes of setting up a date (yes, the infamous "set-up"). This nice gentleman called me and we've talked a couple times on the phone, have set up coffee twice, and have rainchecked twice. I now have a friendly message waiting to be answered, wanting to set up another coffee time. But here's the thing: I just know that I'm not interested in this guy. It's nothing personal, he sounds extremely great in lots of ways. But there's a couple things about him that I just don't think will work with me! So, what do I do? I feel even a friendly coffee meeting will be uncomfortable and even if I did share honestly that I wasn't interested, there's always the "well, let's be friends- it's always nice to meet new people!" thing, which is usually totally unnatural and doesn't pan out. And you know, I think I have enough friends... I really like them, and hanging out with them fills up my schedule quite nicely as it is. It may sound cruel to have a "friend limit", but let's just be real about this! So anyways, what do you guys think? Would I break some "dating code" to be up front with this sir on the phone and just say I don't think it would work so let's not even meet? Would I be sacrificing precious shreds of human decency? I guess I don't make the greatest "set-up" material (sorry Anna!) :) But I'm interested in what you have to say. And maybe some of you have some interesting dating stories?... Do feel free to share!