What does it mean if your girlfriend suddenly gets very affectionate after she's recently left to travel for work for 2 months?

...all her texts, phone calls and emails are suddenly more affectionate and complimenting? She's only been gone 2-3 days but the change was almost immediate... yet she wasn't particularly emotional or loving when we said goodbye- it was like any other time as if i was seeing her the next day, despite the fact i was on the edge of weeping, but now the sudden change... what does it mean if your girlfriend suddenly gets very affectionate after she's recently left to travel for work for 2 months?

What does it mean if your girlfriend suddenly gets very affectionate after she's recently left to travel for work for 2 months?
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