I think there's a huge difference between dating students habitually and dating a student...
But that's off topic, really. Now that you've declared your true feelings using your name on a popular aikido discussion forum, what else is there to do but wait and hope you didn't place either yourself or your sensei into a major pickle?
I hope that:
a) Janet is not your real name
b) You are the only one in your dojo who reads this discussion
c) Your sensei loves you back, or failing that...
d) There is another good dojo in your area
I can't imagine letting The Crush Bomb drop really publicly and facing the consequences in a really specific social setting like a dojo... I am wincing and crossing my fingers for you.
Best of luck,