The birthday boy for August 10 is Justin Theroux.
I don’t know much about Theroux, but I do know that he’s been Jennifer Aniston’s boyfriend for quite some time. As far as sun-sign relationships go, I really like the Leo/Aquarius combo. Leos typically thrive on being adored by their fans and Aquarians often work hard to create a climate where they are accepted by the masses. Together they form a supercouple that can soak up the admiration while giving enough back to remain relevant in the public eye. They bring out the best in each other.
There are a lot of other factors to consider when evaluating the validity of a relationship, but sun-sign compatibility does play a role. In this case, it could play the most important role. I’m going to go out on a limb and predict that these two are in it for the long haul.