Our birthdays are exactly 4 months apart, any significance?

We are both air signs. I'm a gemini and she's a libra. Today's her birthday (october 5th) and my birthday is june 5th. Is there any significance. If you believe in cusp differences, we both are smack in the middle of an air sign so maybe some significance if you base it on sun signs alone? But I'm not sure her age so I can't look up her natal chart...not that I'd want to. There is chemistry there and that's what matters most.....but I'm wondering if there's any significance of being born exactly 4 months apart of somebody.

No, I don't think it's in the dates. It's in the inter-aspects between your respective planets.

Well your Suns are probably trine by aspect (as well as sign) so there's chemistry there.