WFF - I answered a few months to a year to the next relationship duration question, but really who wants to put longterm or one night, even if that is what you want? If there was a 'dunno, see what happens' option I'd have gone for that!
Thanks for all the advice - second date is starting at his, out for dinner and drinks, and then, er, staying over at his (that's not good, is it?!)...it was his idea, but I did have other options to choose from, and there are good reasons to stay at his rather than elsewhere (time together, free, and I'm very nosy).
I'm pretty sure he doesn't expect to dtd this weekend (I'm not going to anyway). Innuendo is funny and lighthearted not direct, and if I'm honest is not onesided either, so think he probably is a gentleman...