Hey guys,
Friday night I met a new girl, friend of friends.
I approached her, talking and joking for a couple of hours, she answered with IDI and I also send her IDI in the end, arriving in the comfort zone.
I did a huge mistake

, thinking that she would come out again with us on Saturday, because a new friends night our was planned, and I did not ask her phone number.
On Saturday she did not come, and now I have fear to lose the comfort that I have created waiting for the next time that she will come again with my friends.
Do you suggest to ask her number to a friend of her or to wait until the next time in which she will come out again with us (could be tomorrow or in a month or more)?
(I do not know her surname and I do not have FB)
