If I'm not divorced but am physically separated from my wife, can I date?

Legally, you can of course "date" any time you like--even while "happily married" (not divorced). There is no law that stops you. And if  divorce remains uncontested, it should not matter. However, if the divorce turns contested, then the fact that you were "dating" while still married (even if separated) will be information considered during the divorce proceedings and could influence them against you. This is especially so when you've "only" been separated for not yet two months; also bear in mind that a phsyical separation is not a legal separation and has no effect on your marital status, obligations, etc.--in ALL legal ways, you are simply married as before  (and, if it turns out or can be somehow shown you were involved with that person prior to the separation, it will look worse yet). While you should check with a matrimonial lawyer, who can evaluate all the specifics of your situation in confidence and detail, to be sure, I strongly suggest that the advice would be to simply not date until the divorce is final and the wife is out of the country...from what you write, that's only another few months.