Girl at work had shown interest in me and I asked her out (Saturday before last) which led to a positive date. She ended up making physical contact like playfully punching my arm, laughing, asking questions, etc. We ended up kissing then she hugged me after.
So, Thursday in work I asked if she was free to do something the weekend gone and she told me she was busy that weekend but free the weekend after. Later that day I went up to her and said "Next saturday fine?" and she said "Yeah" in a positive tone. She reacted well to my teasing later that day too, acting shy and giggly.
However, the day after when I walked in work and saw her, I started speaking to her about Mexican food then offered a name of a place, date and time in which she responded "Yeah I'll message you about it", but in a less enthusastic tone, but she was sat on the floor on the main aisle sorting a shelf out and looked busy (apparently she hates that aisle).
She remained smiley to me throughout the day and we laughed after we bumped into each other at the door, whilst exchanging "hi's" with smiles on the odd occasion. I noticed she would be smiley/laugh a bit around me one moment, then the next moment she wouldn't even acknowledge me or act a little distant, so I did play that card a bit but whilst I was busy. When she was leaving the store with her sister, I made eye contact with her but I didn't say anything as I was walking past. As soon as I started walking past her, she turned and said "see ya" to me, in which I did the same.
Was this her rejecting me with the "I'll message you about it" part? It's been three days and no message. I will message her on Wednesday about doing something this weekend, which will probably get me my answer.
(In addition, I spoke to a work mate who has known her since she was 12. He told me she's a shy girl and that her sister told him she's not very confident when it comes to guys liking her, like she's not great with showing interest. He also told me her only boyfriend was a year ago and that lasted two weeks, so she only has two weeks of relationship experience.)