You've been growing for who knows how long, but just before all of this happened, Your Crush (now GF) asked you out, there's no way you could reject her so you accept her feelings, only a few days later though, you started growing right in front of Samantha, she was shocked, but secretly adored it, your growth never stopped and only got faster, you already outgrew the town when your GF told you what was happening to you, you continued growing for months, until Earth was completely dwarfed by you, Samantha was on Earth staring up at your growing form, she adored you so much and actually wanted you to keep growing, which is exactly what happened, you were so big that you couldn't safely grab Samantha without hurting her accidentally