Post-Breakup One-Night Stand

I just got out of a long-term relationship and thought I'd take a night off from my usual routine. Met a stranger at the bar, one thing led to another, and we ended up having incredibly intense sex on his living room floor. His cock felt so thick inside me as he thrust relentlessly; every stroke made me feel like I was about to explode with pleasure. Our skin slid against each other slickly, sweat mingling between us. When did casual hookups start feeling more intimate than serious relationships? What do you think?