How to break off a long term relationship?

Ive been dating this girl for 5 years now. We havent really lived close to each other for most of that time and have never really spent more than a co

I've been dating this girl for 5 years now. We haven't really lived close to each other for most of that time and have never really spent more than a couple of weeks together in one go.
However, we've taken an extended holiday around Europe and I'm realising that we just don't have all that much in common beyond acting (we're both trained actors and like going to the theatre).
I won't go into all the details but aspects of her personality that I hadn't really noticed before are starting to become annoying to me and I feel like I spend more time rolling my eyes and muttering under my breath than I do just enjoying her company.
I think we're also at different points in our lives (a bit cliché but still true) which doesn't really help.
The biggest problem is that we're still on the holiday. She's going home in a few weeks but I still want to see a few places before I go home. I might even find some work and stick around for longer.
So here's my conundrum: so I break it off before she leaves for home, after she leaves but before I do, or after I get home as well (Bearing in mind that it could be anything from 2 weeks to 6 months after her)?

or:I've been dating this girl for 5 years now. We haven't really lived close to each other for most of that time and have never really spent more than a couple of weeks together in one go. However, we've taken an extended holiday around Europe and I'm realising that we just don't have all that much in common beyond acting (we're both trained actors and like going to the theatre).I won't go into all the details but aspects of her personality that I hadn't really noticed before are starting to become annoying to me and I feel like I spend more time rolling my eyes and muttering under my breath than I do just enjoying her company. I think we're also at different points in our lives (a bit clich\u00e9 but still true) which doesn't really help.The biggest problem is that we're still on the holiday. She's going home in a few weeks but I still want to see a few places before I go home. I might even find some work and stick around for longer.So here's my conundrum: so I break it off before she leaves for home, after she leaves but before I do, or after I get home as well (Bearing in mind that it could be anything from 2 weeks to 6 months after her)?

or:Well the truth is you can get her bye webcam or send her a letter you dont ant to upsett her right, perhaps it would be easier to get someone in her country to explain to her it can be anyone but i would only choose anyone that you trust the most cheapest way to break up with her is send her some chocolates with a message sort os sayint this \"Im Sorry im breaking up with you the sight makes me cry we have not seen eachother for a while but we cant be apart so i think we have to move on we both need to battle the outsiders and remember ourselves from the insides i love you never change and dont let any one try to make you be someone you dont want to be i have loved you for the years we have known eachother we can still be able to use webcam and i wish you good luck im sorry im not explaining this well but goodbye i will always love you and im sorry if i have broken your heart it is verry delicate if you need me im always here for you\"

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