It happened, it wasn’t made up, but if I recall correctly, it was an old interview which didn’t fit Gillian and PM timeline. I’m sure Vanessa Kirby has a lot of other friends, I’m not sure she considers PM as a close friend with whom she would played the matchmaker anyway, nor with Gillian. You have to be very close to the persons and very comfortable with them and with the fact of interfering in their private lives to do such a thing.