"Hey Joe, I have an extra ticket to the baseball game/concert/UFC match. Would you like to come with me?"
Could do - I was worried this might feel too date-y, like he might see through it and know I only bought the spare ticket so I could ask him.

I don't think there's any way you could ask him out without his thinking you are interested in him. If you know that he is interested in you in that way, it might be kind of, well, stringing him along.
I could be wrong in this, just my thoughts.
No, you're probably right. The thing is, I'm not sure that I *am*, and I'm not sure that *he* is, for that matter. But I'm not trying to string him along, I'm certainly
potentially interested- I just want to get to know him better without any expectations/assumptions.
Don`t say "just as friends" unless you really mean that. That`s warning him off pretty clearly.
I`d suggest the barbeque idea. If other people are coming, it`s not a "date-date", but he will realize that you enjoy his company.
Thanks Twik, good point. I definitely won't say that - I think it sounds rude and presumptuous on my part, anyway, like 'Hey, would you like to come to my barbecue, but only as my friend <subtext: because I know I'm so great that you'll be keen for more>' - KWIM??
The problem is that I have zero radar for this kind of thing. We've had some really long conversations over work (we get paid by output, not on the clock, FTR), and he's said how much he likes talking to me, and stuff about me being good looking (I'm not), but I dunno if he's just being nice/friendly. I don't want to make a fool of myself.
Anyway, thanks everyone for your suggestions, much appreciated.
