Background: Have been chatting with very light flirting and innuendo with a woman I met at work through our facility gym. I see her twice a day regularly for about 10 minutes (doing business transactions) and we make decent small talk.

Today we got talking about diet and fitness (we ran treadmill next to each other yesterday), and talking about what foods work and don't work for each of our needs. She said that she had lost about 100 pounds and it was a real struggle. I told her, "whatever you are doing, keep it up, because you look amazing!" She didn't even really acknowledge it besides smiling and shifting back to business talk. She also didn't answer my email I sent a few hours later asking if she wanted to try a vegan eggroll from a box I had brought in. Completely shut down.