Complacent

Tension rests it's head on our pillows 
Squeezing in past careless complacency,
finding a home in my pained longing for more 
This new roommate seems far too comfortable in our company
A threesome I never consented to
It's not an "elephant in the room"
It's the way I forget to make your coffee,
or how my skin is free of planted lips
How we both pretend not to notice  
Is this what together means? 
Or are we simply sat next to each other 
The fights don't feel worth starting, 
I'm already stuffed with empty promises
Threatening to overflow from every growing crack in this guise 
But boy do you sound sweet when you make them