United Kingdom, March 21 -- Rob Lowe has an "overly inappropriate interest" in his children's love lives.

The 61-year-old actor has Matthew, 32, and 29-year-old John with his wife Sheryl Berkoff, and admitted that he is desperate to become a grandparent so he is always checking in to see if they have found anyone to settle down with.

He told AARP Magazine: "I have a probably overly inappropriate interest in my sons' love lives-because I'm angling for grandkids. It better happen!"

Rob reflected on becoming a father himself and recalled making the quick decision to raise them out of the spotlight when it was suggested to him that a Hollywood agent arrange his children's nursery school places.

He said: "I thought, I am not ever going to ...