However it seems he has a change of heart about a future wedding after reports have surfaced he is set to ask his pregnant girlfriend to marry him.
Sources in the US have said Simon has bought a ring, but is keeping all details of the proposal under wraps.
US publication People reported that the X Factor mogul may be planning to pop the question during his annual Christmas break to the Caribbean.
Lauren will not be there for the duration, but will be joining him for points of the break. The holiday could be the perfect chance to surprise his other half with a festive proposal.
The couple are expecting a little boy early next year – new reports put the baby's due date at 28 February.
US socialite Lauren will apparently give birth in New York, to be close to her mother Carole Sandland.
Simon has revealed his top two name choices for their son – Simon, because "I like the name" and Eric, after his late father.