Did the roommate use the same WiFi network as you, and your roommate used the WiFi to research it?
Well, since my data comes from my wife and I (we have nobody else) and we didn't look up Deadpool (ever) because she doesn't care and I don't talk to her about it because I know she doesn't care. We see Deadpool advertised playing at a theater on the marqui, so I call it out
Me: "I would go watch Deadpool with my best friend Z if he was in town today".
Me: "Did you hear they have a Deadpool dog? Dogpool!" (saw the trailer from my desktop at work)
Wife: "I don't care about a Deadpool dog. You should definitely go see it with Z."
About 2 hours later. Ads for Deadpool litter her Facebook. Deadpool had been out for 2 weeks. Why now? Because we talked about it in the car while she was on Facebook. I've worked in Adtech since about 2005. It's the phone and or the app. Our Google TV does the same thing, except Youtube doesn't seem to be affected by conversation. So that's something.