I fell in love with this girl on holiday but now I’m home she lives 300 miles away?

We met on the Isle of Wight for a week and now I want to see her but my mate said that she never told me she had a bf and it was a holiday thing but I still have feelings for her I’m 15 she’s 13 I’m. From England she’s from Wales please help!!!
Come on be realistic please
And she’s called Paige if you must know 😀