Why didn't she say goodbye to me at the end of the semester?

Anonymous
Out of everyone, we interacted with each other the most. She seemed to really enjoy, would tell people that the "people kept it interesting" in class. Always making each other laugh and it got to the point where I'd physically flirt by tickling her. We even hung out once.

She does have a boyfriend, though. However, on the last day, she didn't even say bye to me. She said bye to everyone else and hugged them, but she never came up to me. This was weird because she'd keep seeing these people next semester, but I was leaving the college so we probably would never see each other again.

I thought maybe she might text me and say she enjoyed our time together, but it's been 2 weeks and I haven't heard a peep.

I'm confused. How could you spend that much time with someone and enjoy it, and yet not even say "I had fun" or even a goodbye when the time came?
Why didn't she say goodbye to me at the end of the semester?
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