Hektore

We have a winner!

will and Cyn have it right, you two will have to decide for yourselves what is meant by an open relationship. Inform her that you are in fact, not a mind reader and need to know exactly what she means in specific terms.

For myself, I consider and 'open relationship' to be one that is not mutually exclusive. Basically you still do all the bf/gf stuff together, but are allowed to do it with other people as well. This may or may not be what your SO means. Typically this comes into play when one or both people aren't ready to 'settle down'. Whatever the case may be the best thing you can do is ask her about it.

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The advantage law is the best law in rugby, because it lets you ignore all the others for the good of the game.