Met this girl through a mutual female friend at a party. We hit it off and started chatting on FB for a couple of weeks. She seemed chill and I liked her vibe so I asked her out for quick bite. She said yes sure. At this point we were chatting back & forth and she typically replied within a few hrs each day.

We go on the date and I say it went pretty well. I was confident throughout, held the flow of conversation well, flirted, was not anxious at the pauses in the conversation, smiled and joked most of the time etc. She seemed shy at first but then got into it. She kept talking most of the time and laughed at my jokes. We decided to grab some wine at a nearby place. We sit down on a couch next to each other. And the date pretty much is chill the rest of the night.

The only weird thing is that as soon as we transition from venue to venue, and then when we walked back to her car, she kind of changed vibe suddenly (from chill and joking to serious).

We get to her car and we kiss each other on the cheek, then I go in for a quick peck.

2 days later I msg sth saying it was fun and we should do it again sometime. She replies to my other messages and then says sure..

Tried to restart conversation. Even though she replies, she msges once a day and that's all compared to before. Not dumb enough to realise she has probably lost interest. Dunno what the hell went wrong..

Any opinions?