sex drive disaster!!!!!

So I recently lost my job. My husband and I have worked at the same place for almost 7 months. It was great.  Both of us are are very clingy people so it worked out for us. Well we only have one car and since I have the kids now I usually keep it. So he's been riding with this girl that we worked with. She's really cool. I've never had an issue with her but her and her boyfriend have recently broke up and my husband and her have been getting really close. I trust him. I really do. He talks to me on every break. He's home when he's supposed to be, I know he's not doing anything. BUT, due to the hours that he works I'm usually in bed by the time he gets home. So since we've stopped working together our sex life has went to complete shit. In the past if we didn't have sex after work we would go to some abandoned parking lot or something on lunch. It was almost an every day thing. Now it's like he doesn't really want anything to do with me when we are around each other. Not even kidding, I've gotten myself off more in the past week than I ever have in my life. What do I do!? How do I make my husband want and need me again. Do you think it has something to do with the girl he's been riding to work with? Is he just bored? I'm 19, I take really good care of myself and I'm always doing new things with him. I can't seem to figure out what the problem is!!