If everyone you measure the number of calls you get is higher than the previous measurement then it is easily possible. Y’know day 1 you get one phone call, day 2 two, etc. Than you will consistently have higher volume than average… Technically

Did you also place a big spotlight outside her bathroom window?

What about a difficult plant to maintain? Maybe a cactus or something? So he has to make an effort keep it alive, or slowly watch it die, like the relationship he has with you