Oh that was delicious chapter, you described human feelings with cool alien-ess.

And I'm a sucker for Happy endings. Ratchet, you bad, bad bot, how could you hurt Optimus like that and after he showed you holo!sex

*pouts*

Me wants Opie to be happy, Preferably with Ratchet.

And the sticky porn is when robots are still in his robot forms but have equivalents of human sex organs, aka robo-cok(usualy called spike), robo-vag(valve) etc along with lots of various fluids (that's why it's sticky)

holo-sex is more apropriate for your series ^^