You are right Olga and I agree with your statement. We are adults, communication is not marriage and even after a meeting you don't know what the future brings. But let's face reality, you build up future problems. There are 3 people developing the same (or some) hopes. When it comes to the point to meet in real life, most man will plan to meet both woman within the same travel (because of efficiency or they can not afford a lot of traveling). This brings up exactly the situation you can read a lot of complaining here. I ask you honestly, would you like to find yourself in this situation? I don't think so, but I'm open for a surprise  

I really wish we all where grown up enough, not to fall in the emotional pitfall. My best solution would be the following: Tell my 2nd contact to get to know each other on a friendly basis, when I visit her country. Meet the 1st woman with serious marriage intentions and the 2nd one only with friendship intentions. If the meeting with marriage intention turn out positive, the 2nd can be happy about the luck of a friend. If the first meeting turns out negative, then there is already friendship, where you can build on.

Let me know your thoughts about this