I have Venus and Pluto in the 12th in Scorpio, and Venus is retrograde.
Very few people have had planets fall in my 12th house. In my chart it's caused a lot of confusion - I guess because of the retrograde and the fact that Venus is in its fall in Scorpio. A feeling of understanding each other on a very deep level. But also a feeling of mistrust and confusion over intentions.
A lot of eye contact, but often in a confused way because we don't know what to say to the other person.
In my experience the house person feels it more. The planet person - that planetary energy, gives the 12th house a little shake up. But to be honest, I don't know how the planet person feels!