I have a much looser Ven/Nept and never associated with the roller coaster image for my relations (perhaps something more like my internal leeway for "faking it" to a certain extent in certain relations seemed great enough to undermine self-respect).
But that Ven/Nept is part of an Octo-Yod (your Sun lying semi-square away from Ven/Nept with a 2 min tight-orb serves as a base for the pair of matching semi-semi-square family aspects formed by the Moon's triangulating position).
Since that Octo-Yod has an average orb of about 22-ish min, it may well be true that many of your experiences/behavior in areas relevant to those planets will enjoy a fine-tuned astro-self-label with the Octo-Yod (not to mention the ability to spot synastric and/or transiting planets which light up the whole Yod, not just one of its components, when lying 2, 4, 8 or 16-denominatored aspect away).
...assuming, of course, that your experiences/behavior finds correlation in the Octo-Yod.