Two of my friends have just started dating. They're both Gemini with some strikingly similar planets. They're seven years apart.

I'm wondering if anyone has a prediction about this. Is it TOO similar to work, or are they similar enough that there will be an understanding that will keep them going?

HIM:

Sun 01z 29' Gemini 
Moon 12z 29' Capricorn 
Mercury 23z 38' Gemini 
Venus 13z 22' Gemini 
Mars 20z 15' Taurus 
Jupiter 00z 29' Libra Retrograde
Saturn 03z 08' Libra Retrograde
Uranus 27z 57' Scorpio Retrograde
Neptune 24z 04' Sagittarius Retrograde
Pluto 21z 57' Libra Retrograde
Moon's North Node 03z 25' Leo Retrograde
Moon's South Node 03z 25' Aquarius Retrograde
Ascendant 08z 08' Virgo 
Midheaven 04z 05' Gemini 
Chiron 18z 57' Taurus 
Part of Fortune 19z 08' Aries 
Black Moon 16z 03' Scorpio 

HER:

Sun 14z 04' Gemini 
Moon 07z 26' Aquarius 
Mercury 26z 19' Gemini Retrograde
Venus 27z 08' Gemini Retrograde
Mars 08z 16' Pisces 
Jupiter 20z 19' Taurus 
Saturn 00z 24' Capricorn Retrograde
Uranus 29z 41' Sagittarius Retrograde
Neptune 09z 29' Capricorn Retrograde
Pluto 10z 18' Scorpio Retrograde
Moon's North Node 18z 53' Pisces Retrograde
Moon's South Node 18z 53' Virgo Retrograde
Ascendant 20z 12' Cancer 
Midheaven 00z 50' Aries 
Chiron 28z 26' Gemini 
Part of Fortune 13z 34' Pisces 
Black Moon 02z 20' Virgo 

Whoa! Your girlfriend's practically my astro twin. I'm guessing she was born the day after me - we even have the same moon sign...

May we see their charts?

He is on the INSIDE, she is on the OUTSIDE.  

It's kind of like that whole twins question about astrology...they could be completely different in so many ways, dependent on experience. I say they try it! 

This synastry stuff seems way overrated IMO. Now, I'll admit I say that from the POV of never having been in serious relationship, but at the same time, some of my best friendships have been full of "hard aspects," so you know, you never know what people have become on their path...

Eh, I don't think "too similar" is a problem unless they get bored, and some people won't get bored with that. If they aren't inclined to having yelling and screaming relationships, or particularly weird ones, I don't see why it'd be a problem.

About the only difference I see of major consequence might be Cap Moon vs. Aqua Moon. That might be enough "difference" for them to deal with as is.