Oh hi, Internet! You're still here! And I'm not dead yet.

I do have a couple of articles to recommend for your edification:

The first is a thought-provoking essay by Jesse Bering: Polyamory Chic, Gay Jealousy, & the Evolution of a Broken Heart As the title suggests, the essay explores the recent upsurge in discussion of evolutionary theory as it relates to non-monogamy, and where gay relationships fit into that picture. I don't agree with everything he writes, but he does have some very interesting observations.

The second is a fantastic response by Christopher Ryan (co-author of Sex at Dawn). On Gay Jealousy

I was grateful to read Ryan's response, because I had been struggling with the implied concepts in Bering's essay and couldn't quite articulate why. With his assistance, I can identify my beef: trying to force-fit relationship jealousy into the evolutionary mold without considering that it might have other learned or social causes - and characterizing it as an unavoidable response to a partner having sex with someone else. Ryan has some great comments on separation anxiety and emotional loss, which are applicable to everyone, gay or straight.