Ok, this is merely hypothetical of course, as we were the first to leave, but what if we had not had a referendum, and say... France and Germany (for example) had a yes/no referendum and both decided to leave. We were then 'hypothetically' offered a yes/no referendum ourselves, would this have swayed you to vote differently?
Although it is a hypothetical question, I do believe it has relevance as there is a growing push for these (among other countries) to have a referendum, they may well vote out, and that would of course change the whole structure of the EU hugely. Would it look so attractive to be in without these big players?
Additionally, returning to the real post 'Brexit' situation, do you think these countries will now vote to leave? Do you think Brexit will have swayed the vote for them should one be offered?