I can see why he goes on chatrooms, that'd be so he has anonymity and might meet a girl whose right for him and who'd be unaware intitally and unimpressed by his wealth, that's not hard. Selling cars myself as I do, I notice if you turn up anywhere in an Aston Martin then women throng, if you're in a transit van, they have to concentrate not to spit on you sometimes.
I'm a bit confused about the Beckham reference though, I wouldn't imagine that they would buy cars via an agent, although I might be wrong and what sort of watch is it he has?
I think you did the right and polite thing in not drinking or smoking, no-one likes a drunk, but if you want a future with this bloke then you have to either decide to let him in on the real you or address your drinking and smoking on a permanent basis which might be easier said than done.
I'd just take it really slowly, it's early days yet, just see what comes of it.