You respond with "Sorry, I promised Kylie/Shazza/Tigerlilly that I'd be a good boy".
A statement only a married, 40-year-old accountant could make... Straight from the heart, James?
Shhhh - that's our little secret
Depends totally on you. Four months isn't that long - my boyfriend and I live apart and have gone up to 6 months between visits.
Visits to whom?
4 months is half as long as 8 months!!
Look, it sucks, and it's tough, and it might not be the same when you get back. If you think it's worth it, just suck it up and do it. If you're having doubts, better to discuss while you can still talk in person -- I would imagine breaking things off while thousands of miles away would be awful.
In my opinion, if you are asking yourself this question, then you've probably subconciously made your decision. If it was worth being away from your girlfriend for 4 months and "waiting for eachother," you wouldn't be worried about if you should break it off or not. If the big question is wether you'll have a better time travelling single, I'd say yes. There are no worries, you can do what you want without worrying about hurting someone's feelings.
I stayed with my ex for a year while he was in South Africa and I was in Canada, and while it seemed worth it at the time, things happen and people change. Especially while travelling and experiencing so many new things. Hard decision to make man, but you'll get an epiphany sooner or later and figure it all out!
i totally agree with gypsy_girl if you are thinking about breaking it off, you have already made your decision...