They're finally starting to get more comfortable proclaiming their relationship publicly.
Sluttyienna Miller castoff Rhys Ifans accompanied girlfriend Kimberly Stewart to her birthday party at Bungalow 8 in London on Tuesday night.
The rock heir is turning 29 on Thursday.
As a token of his affection, dirty Rhys scribbled "I HEART K" on his cheek.
Then he went home and urinated all over Kimberly!
Slutty was all over that shit, right???
[Image via WENN.]