Actually I am that second nice, not the pussy. You got it all wrong (not sure where do you get that). I was not afraid to open, I just did not want to hurt feelings of the second girl. Its like sometimes you don't say your honest opinion about something in order not to hurt people's feelings. Its not the pussy nice, its "the right thing nice".
Another example of me being nice - when a girl is ugly and asks me could we hang out I don't say no because you are unattractive woman, I say something like well you are nice girl, but we don't click. So thats the "right thing to do" nice, and not "afraid to say that she is ugly" nice. The same "nice" plays in my original post, I am not sure how could someone get it as pussy nice

Plus thats why I clearly stated in my OP that I am NOT your regular "nice guy".
Ps: I think it should be better called "good person" and not "nice guy". That may be more clear and helps avoid misinterpretations.
Opening both might be the solution, but I am talking about the situation when its not really an option. For instance you are in the bus and one girl is 1 meter away to your left and another 1 meter away to your right. Its simply not possible to open both at the same time. And if you open one, and then another - its bad because both will mark you as a so called "player".