Megan and Cona do doubles that would one hell of a threesome. I wonder if they're willing to make it happen for certain amount of donation.

when they're sharing an apartment.  They won't travel to do them.  I know Cona is still up for doubles with the right roommate(s), but I think Megan is finished with them anyway, so I would be surprised if it ever happened.  

Cona doesn't really want to do doubles. She did it early on  to build
her business and was exceptional with Chloe O. You would never  
know that she wasn't really into it.  As for now it's off the table.

When I saw her for doubles, it was with Grace.  I think early 2015, but I was reviewing on another site then that went defunct soon after.  That was also a great team, and you're correct, if she wasn't really into it, then she gave an academy award performance, which caused me to repeat with just her, which was also off the charts.