Alone.

After Fiona leaves shrek and all his friends drift away. He's left all alone with no one but himself and his swamp. Shrek decided it'll be best to find a new date to settle down with and finally find his happy ever after. After being alone and having the same routine on loop Fiona opened his eyes that there's more to life then terrorising innocent victims and eating frogs although he will still do that he wants a lover to spice up his life