Well don't worry about the Uranus squares, that's not a big problem. I am more concerned that his Moon and Venus are not activated.
Here's the breakdown:
House placements:
Your Sun in his 4th House/5th House
This is a good place for the Sun, he identifies you as family and also because it's close to the 5th cusp as well, he sees you as someone he can have fun with/and possibly have kids with.
Your Moon in 2nd/3rd House
Yours feelings may involve his possession/money/financial situation. Do you think a lot about what he owns? Your Moon is also close to the 3rd house so you may get a little more emotional in your conversations.
Your Venus in 6th House
Not a grand place to be for Venus. Your love may involve watching his diet, fitness, daily routines, and he will enjoy doing housework like cooking, cleaning with you.
His Sun in your 12th House
Not a good place for the Sun to be - this is the hidden house. You may not know exactly how to interpret his personality and may feel a little uncomfortable reading him at times
His Moon in your 4th House
Best place for the Moon! He stirs feelings of familiarity and heritage within you. You feel like he's already family.
His Venus in 1st House
Personally, I really like this placement. He makes you feel like the most beautiful girl in the world! Chances are, he is very attracted to your looks!
His DC in Cancer - he is drawn to emotional, motherly, caring and nurturing women
Your DC in Gemini - you can be a little fickle-minded when it comes to an ideal partner and you seek intellectual stimulation. You also like variety and hence, may be confused to what is truly your type
Your Juno is in Gemini in 5th House - this gives your DC an even more Gemini emphasis. Your future husband is chatty, a little fickle-minded but loves children and having fun
His Juno in Libra in 9th House - His future wife is beautiful, charming, graceful and may come from a different culture
Bad Aspect
His Sun sq Your Moon
Not a great aspect as there will be clashes between his personality and your deepest emotions. He may hurt you unconciously with the way he behaves.
His Venus/Moon not really activated
In order to get a guy to be committed or to be continously interested, it is best to trigger his Moon and Venus. The lack of close aspects of your personal planets to his Moon and Venus may mean he may not be as emotionally involved as you would hoped for him to be.
Good aspect
Jupiter trine Sun / DW
As this is a double whammy, there is good luck in your connection
AC sextile MC (4 degrees)
I personally like this aspect. Though it's 4 degrees, your personality and the way you carry yourself is connecting with how he wants the world to perceive him. So you do affect him in some way.
Your Juno trine His Venus
I always look for Juno aspects in synastry to see if there is a chance of marriage. If there was Pallas, Vertex and Vesta included in the chart, we can also have a clearer look. However, as it is, there is not enough powerful aspects to show if it's fated.
Summary:
You have such enviable house placements so even without the Venus/Moon activation on his part, I believe he is still very much attracted to you. I didn't see any strong Saturn connection so longetivity may be questionable. Do enjoy the relationship for what it is. Don't stress too much. I think it's best to find someone who triggers more personal planets like Sun/Moon, Venus/Mars, Venus/Moon... so this guy may not be the best fit for you.
I wish you all the best! Hope this has been helpful!