As odd as it was to be going through a growth spurt at 21, as well as have your muscles and strength grow while doing very little excersize, you didn't mind. It was great, and your confidence had grown as well.
Then enters Mollie. Mollie was the most attractive girl you had ever seen in his whole life. She stood at 5'4", and had dark red hair that went down to her shoulders. Her eyes were green and brown at the same time, and seemed almost Asian. Her small nose and mouth went well with her round face, which went well with her toned body. The only flaw she had was the lack of chest size, but that wasn't enough to take away from her shapely behind and her curves.
You and Mollie talked, and hit things off really well. You met in school, and became a couple after a few weeks.
And still, as time went on, you grew in all directions. Your body thickened and lengthened, Your muscles grew larger and had more power, your bones built themselves longer, and your penis swelled.
As this went on, Mollie was bound to notice. You two laid on your couch, talking while Mollie was in your embrace. "Hey, Moe? I never see you work out, but you've gotten bigger. When do you have time to work out?"
You shrugged. "Before school, after school, you know, whenever I time I guess."
"Oh." She said. "It's kinda weird you're getting so big so fast."
"Why? You don't like it?" You asked.
"No no, I do, I just hope your not taking drugs or anything." She said.
"Do you think I'm stupid? Of course I'm not taking drugs." You respond.
"That's good." She said. She stood up, "I gotta go wanna walk me out?"
"Sure." You stand up, and looked way down at your girlfriend.
"I swear, it looks like you've gotten taller." She said, looking up at You.
"Huh?