I guess it’s too late now, but the worst thing is to not be yourself, it’s ok to be nervous, but still be yourself.
I remember when I was dating a girl her first time, she was very not herself, ruined everything. You HAVE to be youself!
If you need any advice don’t hesitate to ask, there
is tons of collective (*even uncollective) experience here at the CR.
(btw BMG guys have access to internet as do other yeshiva guys unfortunately)
*V’hamevin Yovin