I recently got a girlfriend, but i dont feel like we are a couple,

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I recently got a girlfriend, but i dont feel like we are a couple, my gf says she never had a boyfriend before she is 19 and im 21 (she is my first girlfriend).
The first time i confessed to her she said she didnt have time to talk about that stuff and never gave me an answer so i stoped talking to her because i assumed that she didnt like me back... two weeks later she texts me that she didnt want to talk because she didnt know how to express her feelings but she didnt wanted to say it saying she didnt have time. So we met one day after the text ... we talked, we kissed we huged it was a really cute moment.. after that she looks indiferent like she dont care about me, so we met 2 weeks later and i asked her to be my girlfriend and she said yes.
Nothing have change since we are a couple, we went on a date to the cinema, and she sometimes ignores when i tell her to have a good day on the morning and stuff like that.

I dont know if she doesnt love me or it's just incredible shy.