I (32M) had a fantastic first date last weekend with a pretty lady (31F). We had lots in common, and, I thought, good chemistry. The date went on for almost five hours, and ended in a kiss. I was really excited about this match. A few days later, we went out again, and the vibe was off right from the beginning. She only offered me a cheek kiss and seemed a bit withdrawn. The date seemed awkward and I dropped her off without a kiss. Honestly, it felt as if I was on a date with a completely different woman. I'm not sure what could have changed between our dates – any thoughts?