Lewis,

Give it a week or 2 and see what happens been there done that mate and we got back togheter as i trueley know she is the one for me!

Only thing that can sort it between u2 is TALK! the both of you and i do mean talk as what i understand from sarah as well that u didnt really talked to each other.

Go to some friends as i did when i was in the same shit they really help
Get a good nite sleep and each day you wake up you will be feeling better somehow (its strange but its true)

If you want to talk are text or what ever i am here for you mate!