Sept'13 I met a girl.She was in UK from America to live for a bit.Became close & kissed on 3 occasions.I was 21,inexperienced at dating,didn't make intentions clear,missed chance.Told her how I felt 6 months in,she said timing isn't right & we should stay friends & have fun friendship for now but "if it's meant to happen in the future it will".She went home to America end'14.Then until start of '17 we remained very close & although we were in different countries there still felt to be a 'spark' when txting & Skyping.I helped her in tough times,even went to visit her start of '15 & sent bday & xmas gifts.2017 she moved to Ireland for 2yrs.I thought we would pick up where we left off but relationship has taken nosedive.She never initiates communication & when we talk vibe is different,short answers,no questions,less emoticons,feel like the 'spark' is gone & lost interest.Met up 1 day in June as she was in the UK,I tried to make conversations fun but I was just getting flat vibe.She was mid breakup with guy she was seeing in Ireland for 2 months.Her background.No LTR for 10yrs (at 18 dated a guy for a yr).Since then,dated a few guys but nothing ever comes of it.Admitted to me she is quite prude & "gets bored of guys".Despite others 'failing',always been me she comes back to for that spark & flirty chat, made me think I had a chance.Always been in my mind I will be the one in the end that wins,we had a great friendship that felt it could be built on.Now feels that bridge from friend to potentially more is broken.How do I go about fixing this? I know the worst thing to do is appear desperate & needy.Guess I am in a long term friendzone & she lost interest? Should I visit her in Ireland (I'd be staying with her)? How often should I text her? I want to be able to maintain a fun relationship with her like before where I feel I have a chance in the future if the opportunity arose.Just now,I feel the spark is gone,even the friendship spark.I used to feel I was special to her,now I feel I mean as much as any other guy.How can I lay the groundwork now & bide my time for a shot with her in future?