These people would share your birth date, or one pretty close to it. My husband and ex husband have suns trining my natal sun. My husband's sun is within one degree of an exact trine. This has worked out pretty well.
The other person's Saturn/uranus is opposite your Venus/moon, making you feel inferior.
It shows up in the composite as Saturn square ascendent blocking expression.
Often if you meet someone with natal sun near yours, your mercury and Venus positions will be in close aspect, which is nice for friendship.