Should I be concerned?

I have been this dating this girl for one and a half months now. We were both texting one another non stop but since then it has cooled down a bit. She doesn't text as much now yet she is always online on Facebook.. When I do meet her she is all over me for example, kisses, cuddles and holds my hand. Yesterday I met her friends and she was doing the same in front of them. One of her friends jokingly says we approve. She even bought me something from Portugal where she went on holiday. I'm supposed to go to her place tomorrow to watch a movie. I'm just confused as to why the texting has cooled off, she seems cold and yet when I meet her she is all over me? Should I be concerned?

Sorry my English isn't my first language
Should I be concerned?
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