I (21M) met a solid 8/10 (21F). Everything went great, banter was solid, eye contact strong, subtle physical touch between us two, she initiates conversation as well, copies my ahems etc.

However, after being with her for a while, I felt like I wanted space, meaning my brain was fried (this would happen with other hot girls too). She’d look at me expecting me to initiate conversation or banter some more as she was interested, but I kept running my mouth like an idiot thanks to a dead brain.

I cracked some really stupid jokes and conversations as a result and I felt like it affected my own self-respect and attraction. She then began to distance herself by giving me the attitude and cold shoulder.

What is the problem here? What can I do to stop running my mouth and ruining the attraction?