Artists can spawn either extraordinary aesthetic objects or spew demonically hilarious irony. Rather than being a noose or an old ball and chain, an artist’s spouse who is also an artist can be either an intellectual collaborator or an intense competitor who can bring-up the other spouse’s own game. “Significant Others” is a robust art exhibition now on display at the downtown Central San Diego Public Library’s (SDPL) 9th-floor Art Gallery. This is due to the majority of artworks on display. The exhibition runs through February, 28th, 2016. The exhibition intentionally features four sets of married heterosexual couples. This unfortunately casts…