make sure u get rid of everything that reminds you of your relationship. just close that chapter.
by get rid of i mean put it in a box and hide it somewhere.
u need to clear your environment but with time you will be fine with all those things and then you may regret throwing something away.
it really helps.
i also tend to start up new things. new hobby, sport, it is a good way of meeting new people, who don't know the situation and if you don't tell them you can hope to spend your time not going back to what happened.
and time is a healer, it will be ok eventually
fingers crossed