so overall my game is playing great, no real problems or major glitches... however-my female sim has the soulmate aspiration. I've completed the first two sections of it, and am now on the 3rd part. ...
It's weird, because one of my sims have the soulmate aspiration, and finished the two dates with silver goal just minutes ago, and the dates were finished with gold. Both of them. Maybe you had your sim glitched? (it can happen). I think there is a cheat for the aspiration goals, maybe you can try it.