Why are some girls so non romantic?

I have a girl about 1 month and it's really so non romantic she even said that. She don't tell me love you or anything like that... But she loves me and I don't understand why? Can I change this?
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When she send me a text she writes this :* (means kiss) but that's almost all.
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She also said that... she had a boyfriend and he talked all "sweet things"... I don't know what she meant with that.
Why are some girls so non romantic?
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