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I failed to mention that we met in Paris but we both don't live there. He told me he was visiting his mother in Paris. He asked me out and tried to exchange info with me, but I was hesitant at the time and I did not get another chance to meet him.
I am not in Paris currently but I plan to go there soon, but I'm afraid it will be too long until I contact him. Plus, I do not know when he will be there next time. So, obviously, I cannot do the suggestion with the cards although it is a good one and I would have tried it if I were there.
I do not want to appear at all desperate or appear to be a stalker that wouldn't be the image at all I want to give him.
As for buenchico and atalanta's suggestion, I do not know if France has electoral registration, so do you have any idea about that?