Venus conjoins Pluto in Capricorn tomorrow. I've written about it here, but I started thinking about why Venus/Pluto is associated with obsession. This aspect is about merging (Pluto) with another (Venus). But before that can happen, Pluto needs to know that the "other" is safe. Therefore, Pluto digs and digs to get to the heart of whatever/whoever is the focus. Safety through complete understanding.
This process goes awry when you get stuck at the digging part. Fixation. The ultimate goal should be complete understanding, then release. Or transformation.
Something to consider, if you're currently fixated.