Similarities (maybe saying the same thing at the same time... doing the same hand gesture, etc) happens quite a bit with couples (or in fact anyone) who spends a lot of time together in real life. This is called complicitae, ie: knowing what someone else is going to be doing... without actually knowing if you know what I mean.
Maybe, like the above post stated, you share this complicitae with your partner even in the dream world. You are especially lucky if your partner is as open to ideas of dream symbology as you are. Do try exploring. If your dreams get more lucid and so do your partners, try meeting each other in dreams.
However I also agree with the caution: If it's not serious... I would
seriously reconsider! (IMG:
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