Keep your head up fella, the GF might be gone but if that's the case, she wasn't right, and you'll find someone better in time. GFs come and go, family isn't like that, concentrate on them at the moment.
Memories with family are ones that will never fade, ex's, they vanish into the cloudy past.
As said above spend time with your family and don't worry about things on the relationship front, you've got plenty of time and choice when it comes to that and it's not
that important in retrospect.
Right now your family need you and you need them.
Take only good from it, think yourself lucky it wasn't dragged out and messy, sure it hurts but you can take plenty of good from it.
It's one less drain on your resources too so it's not all that bad in these times!
little note: don't ask here for advice when you find a new girl you like, if you've seen the recent threads you'll understand why