Why didn't he enter the store?

redwomen
I was with a guy for a very long time. We haven't seen each other for 2 years, he has a girlfriend now. I work in a shop, one day he and his friend came in. Both he and I were surprised to see each other. I said good morning and he smiled and said hi. He asked for help, I approached, and when he saw me approaching, he smiled. He gave me his hand to shake and asked how I was doing. I gave him a shirt to try on, we laughed a little. He asked how love is and I told him Never better. I didn't ask him anything about him. He smiled and asked how long I have been working there, I told him that I had gained weight and he asked why I am telling him that when I have a boyfriend.
After 3 months, I saw him again, but he just passed by the store and went to the cafe. Why?
Why didn't he enter the store?
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