She pretend nothing happen because she give a stage for you to land my friend. If friend then BFF then lovers, if works, then happily ever after because she know you best.

If things goes south, then you might spoilt a good friendship which both of you have foster over the years. Nay, i would want to date my BFF who is a female unless she is super hot and i cannot tahan another man become her bf/hubby. Sometimes it is better to become a guardian angel than a bf or hubby because woman share their deepest secret with best friend or stranger and never with their love ones because they afraid the secret will break their relationship and how love ones perceive them.

Remember woman is made in another world. Consider yourself lucky to have a good and understanding gf and later wife. Else don't get married and become single is the best choice. You can fish and eat whatever fish you want.

I called it platonic relationship with a female friend. they share their darkest secret with you and they will come to you when they have issue or needed a shoulder to cry on or an good pair of listening ears.

Don't expect them to give you anything in return other than good companionship. As you grow older and when you are married with kids, you need a good female friends to rant and rave about your challenges in work, family, love and sexual.