So many questions: Did he not feel the blood running out of his nose? Did she just think he was a real "moist" kisser? Could neither of them taste the blood? Did they think it was snot? Was the kiss so engrossing that they just didn't care?
Seriously, I'm pretty sure you were on a hidden camera prank show. Because that's amazing. Also, props to anyone who carries cookies in their pocket on a date. That's a level of preparedness I've never encountered.
Pro tip: It's cool if you live with your family. Rent can be super expensive. But, for the love of god don't tell people that on a first date. Just make something up, or say you have to get up early. It's for the best.