Your girlfriend's secret

As you both finally enter your girlfriend's room, she's locked the door and close the window as you don't what is she up to. "Hey, babe. What's with you today, you seems so weird." you said to her.

"Well, let's just say I don't let anybody see us, hun." your girlfriend replied. "And I'm about to show you something that I just keeping a secret from my parents and anybody else, except you."

"Okay, it seems so serious right now." you said as you're crossing your arms and looking at her. "Is there something wrong, babe?"

"Not really though, but..." your girlfriend answered as she's scratching her head gently. "Before, I say anything, can you please keeping a secret between me?"

"Well,..." you respond as you're stressing out right now. "I'm not sure."

"Just yes or no." your girlfriend replied.

"Okay, yeah... Yeah, I promise to keep your secret between you." you answered as you raise your hand.

"Okay, good. Now, here goes..." your girlfriend begins to say as you keep listening to her answered. "Honey, I'm..."