What can I do, I need help?

Hi, I'm a guy, dating a girl. About a month ago we almost broke up because my girlfriend lied to me about something that I considered a big deal, and subsequently dumped me over txt messages because I got upset and went home after I found out she lied to me. She then denied that she dumped me and lied to me the same night. It wasn't the second time she threatened to dump me, so I got fed up, and I said that I think we need to break up or at least take a break to think about what we really want in our lives. We wound up taking a break and we officially decided not to break up 5 days later. She also admitted that she lied about something major that was the catalyst for us to get together (she called out of work with a hangover, she didn't want to admit it, I was the only sorry sap that believed she didn't drink, and I defended her and wound up getting everyone to apologize to her). Since we've decided to get back together, I've been having huge trust issues, from where she's going who she's going to be with, etc., etc. This past week, (A guy that we mutually work with spontaneously came to me the very next day after her and I were discussing sexual "stuff" with sexual advice about that stuff. I asked him "do you know my girlfriend?" then told him I was just kidding. A week later he got pissed off at me for something trivial, and with a grin on his face said to me "so what did you mean by do I know your girlfriend"), so on Wednesday I came up to my girlfriend and asked her "Would you ever cheat on me?" I told her that I wasn't accusing her or thinking that she would but I just needed to hear her answer. She got upset that I asked her! So then this Friday (new years) I get to her house at 10:30 and I go to kiss her and I smell hard alcohol on her breath. (the back story here is that I'm a recovering alcoholic, I have not had a drink for 2 years, I've told her several times that I don't mind if she drinks once in a blue moon but to tell me the truth and be upfront about it). I tell her what I smell, ask her if she used any new mouth wash, any sort of anti bacterial hand wash, etc. (trying to figure out why I smelled that) and she says no to all of it. I tell her that its got to be just me then and that I couldn't explain why I smelt it. In the car to Time Square she's not talking to me, blowing air out of her mouth. She tells me she's hurt that I asked her that. (I didn't ask her if she drank) I start getting suspicious because she's acting hurt (suprise, shock, anger, or brushing it off would be more appropriate I think), I ask her if she'd be willing to take a breathalizer, she says "no" and I tell her "then I think your lying to me". Long story shorter, we start arguing, she says she's upset because I said I think she was lying, I tell her that when she told me she was unwilling to take a breathalizer that made me think she was lying, then she denies ever hearing me ask her that, and tells me she doesn't know what she said no to (mind you we're sitting at a bar at this point because she wanted to take me to an Arabic restaurant). Anyways, long story short, ever since we've had our fight a month ago, I have had the worst trust issues ever, I'm driving myself crazy, I'm loosing sleep, I'm a mental wreck, I want to trust her, I love her and I don't want to leave her, but I can't seem to trust, I feel like I'm messed up and have really bad personal issues, I feel like I'm destroying our relationship with my lack of trust, I feel like I'm out of control. I don't want to hurt her, I don't want to kill our relationship, but I just don't know how to trust right now. Can anyone please help me out? Maybe direct me somewhere where I can begin working on my trust or how to start working on my trust. I can't continue on like this. Thanx.