How to keep girls you met on vacation interested???

I’m pretty new here and I’ll cut straight to the point. I met a girl on tinder while vacationing in Porto portugal. She’s actaully not a local but a girl from Arizona. Took her on a date that same day, hopped across some bars and places and finally brought her back to my hotel. Banged the shit outta her, realized she’s a real freak swallowed everything when I busted real freak.At the time same ironically she’s really smart open minded and has an amazing personality. So it caught me off guard when I found out how sexual she was. Actually we fucked at this restaurant after eating. So basically that was the first time.I think she’s an amazing girl but also a great fuck. I live in Boston and she lives there. She’s always texting me she misses me and can’t wait to see me again. I’m planning to see her again In April. Obviously I have to keep living my life but at the same time i want to keep her at bay. How can I keep her interested in me even with the long distance we share currently?