Ummm... 2 things... why is your GF in his car on Eid ??? that needs clarifying..

Why does your GF not tell him to bugger off.. why all the secret monitoring and checking and stuff. Let her tell him to back off and thats that...

If she is gonna be treating him nicely and so on he may think he is in with a running chance....

And as for him not having anything to do - looks like you dont even if you have so much time to sit and monitor what he is doing !!!!