I knew this girl for about 6 months and we worked in the same office. I've never really professed to her that I love her or anything but I really liked her. I wanted to take things slowly by getting to know her a little bit better before we take on the next step. She told me that she's single on our first date and she put her status as single in her social networking page.
We meet everyday at our workplace and we would go out for lunch and movie occasionally during the weekend. And I would text her once a while saying that I'm thinking about her and she would reply. All the while she did not tell me anything that she's with someone or that she's seeing someone in particular.
It all started last month during her birthday. I ordered a bouquet of flower and send it to her anonymously with the message that it's from someone who 'adores' her smile. I did not tell her that the flower was from me and neither did I ask her what's written on the card. 2 weeks later I text-ed her and said that what I like the most about her is her smile.
To my surprise, she did not reply my text but we were still talking fine until yesterday when I saw her at a mall with some other guy and holding hands. I felt somewhat stupid and I thought maybe I should turn around and walk away but it was already too late as she saw me. She let go of her hands and said hi to me. I was sort of lost for words and asked something silly like "what are you doing here". She did not introduce me to the other guy and we went our way after that.
Ever since then I just felt quite awkward each time I see her. She did not explain anything to me and she's still putting her status as single on her social networking page despite logging on everyday. I'm not saying that she's cheating on me, lying or anything but I'm just somewhat disappointed that she did not tell me that she's going out with other guys.
Should I act like nothing happened and stop all my pursuits or should I talk to her about it?