Is This Colin's Ring Thing?

6/18/2008 5:56 PM PDT
So TMZ caught up with Colin Farrell the other day at LAX, and -- Erin go bragh! -- is that a wedding ring we spy?

The Brit tabloids are all afire that Farrell and galpal Muireann (not a misprint) McDonnell have tied the knot -- the same galpal whose ex-boyfriend tragically committed suicide when she dumped him to hook up with Colin.

We contacted Colin's peeps, and they haven't clued us in yet.