Early this morning I spotted an M3 merge onto the interstate about a half mile behind me.
Whomever was driving obviously spotted me as well because the driver merged to the far left and caught me while I was doing 70 in a 60.
The driver turned their headlights on in what I believe was an attempt to say "hey! Would you look at that?! We have the same car!" Or just to simply get my attention..

Anyway your passenger side headlight is out! Thought I'd let you know!

This event occurred around 8 am this morning (May 31st) on the I84 east in the southern portland area

We both were driving e46 m3s, yours particularly, silver gray on chrome or silver 19s with a drop and the stock chrome gills and grills to match.

Maybe you'll see this... Maybe you won't!
I figured you are unaware because I know if one of my headlights were out I wouldn't use them to signal to another m3.