Don't take no crap mate, girls do not like a pushover.
Treat em mean, keep them keen.
But you got to do it right, what I mean is, don't slam the door in their face or lock them out of the house in the rain, but you got to keep yourself interesting to the woman by doing your own thing and being your own man.
If it were me, I would call her and tell her not to come round tonight as you are going out with your mates, maybe she could come around tomorrow?
Take it from there. You can tell her you love her, you can look after her, but you got to be your own man.
Good luck mate, and if I am wrong, I apologise.