London, April 12 (Inditop) Socialite heiress Paris Hilton, who was bought an engagement ring by her boyfriend Dough Reinhardt, is in close contact with ex-boyfriend Stavros Niarchos.

The 28-year-old Hilton has apparently been calling Stavros at least three times a week, reports dailymail.co.uk.

A source said: “Paris and Stavros are still good friends and speak on the phone quite a bit. Doug knows they are close, but not how often they speak.”