In a time like this in your relationship you have to be really careful not to start confrontations because things are getting tense. My gf actually mentioned this about a month before she broke up with me but i was broke and was trying to get some extra income to take us out.
I would recommend trying to make things romantic even if you're just sitting at home. You can have candles lit when he comes over, play it slow and if its what you guys do, make love in the candle light.
Make movies more fun. Do anything you can to make the best of the situation. Talk to him and get his input as well. Get him to tell you things that will make things more interesting for him.
I guess thats all i can think of....