Sleeping with Rachel was the best. Even when she wasn't that into it, she'd get into it. Finn didn't understand how the girl who could not text without proper grammar and spelling would transform into a siren, a beautiful seductress who would reduce him to grasping hands and needy kisses in an instant.
Their first time was like that. He started slow, kissing and slowly rubbing her arms and back, until he felt her relax. It was the most amazing feeling for Finn to know he could do what he'd wanted to do since sophomore year. In fact he did exactly what he'd imagined a million times in his room, alone; first, he slowly slid the straps of her slip and bra off her shoulders, peppering them with kisses that soon moved to her neck, her collarbone, and then the best thing happened. Rachel, growing impatient with arousal, swiftly pulled her slip off, leaving her clad in tiny pink panties and bra. Finn's heart stopped a bit as she grabbed him by his head and pulled him onto her chest, forcing him to kiss her harder and faster until her breathing grew ragged. She was panting when she whispered, "I'm ready", and finally, finally, Finn had his girl.
And then she had him. And then they savored one another, tenderly and gently, leaving Finn slightly teary eyed with emotion.
It was then he knew that he wanted to marry. To be honest he'd always imagined it, and he knew she'd thought about it too. It was why she kept pushing for New York, an issue that still made him lose sleep at night. Future worries aside, Finn knew that one day, he'd ask Rachel Barbra Berry to be his wife, and she would say yes.
She had to.
And mere months later, she did.