I mean, you want to tell her because you don't want her to find out.

But you should prepare yourself for her breaking up with you.

But if you guys are in love, hopefully she will forgive you. If I was her I would, even though I would be angry with you for a little bit.

Good luck tho!

__________________
Cinderella said to Snow White
"How does love get so off course
All I wanted was a white knight
With a good heart, soft touch, fast horse
Ride me off into the sunset
Baby I'm forever yours"