に会う vs. と会う

I revisited this today and I just couldn’t remember the difference, so writing it down.

• と会う both parties make an effort to meet
• に会う only one party moves

So for example:
叔母に会う。This implies that I’m going to go to my aunt’s place or somewhere that I’m the person moving.

叔母と会う。We are meeting up somewhere, where both of us needs to take action.

To expand a bit more:

✅ 車が壁にぶつかる💥。

❌ 車が壁とぶつかる。

The car crashing into the wall means only the car is taking action, so using に is more natural in this case.

I like how when I type ぶつかる it let’s me select the emoji, so I know exactly what it means 🤣