no intimacy with partner

I have been with my partner for 4 years we used to be very sexualy active, but now I feel the spark has gone we don't even kiss and cuddle as much as we used to any more it's not just the spark of having sex it's everything we don't do anymore, we don't kiss, we cuddle when or if we go out we don't hold hands.

I need to try and get the spark back