Okay. I am a liar. And here are my thoughts. If you decide not to run away screaming, which would truly be a valid option, then don't ignore anything ever again. If it sounds fishy it probably is. Question everything. get the details. give him a chance to straighten it out and don't jump down his throat, but let him know it's not going to slide anymore, he has got to fix it. Knowing that every thing is going to be fact checked will help him get out of the habit. And if he doesn't then run away screaming.

Thanks gwilly. I have been pulling him up, and I'm beginning to get tired of being such a nag already. Its also really beginning to irritate him too (understandably). To what extend is lying? a few white lies here and there? he says he doesn't have a problem. Perhaps I'm over exaggerating?

No, no, no, I don't think you're over exaggerating. Honestly (HA!), give him a chance... like a "get out of jail free card" for maybe a week. Anything he's lied about, he has to tell you within that week and get it out of the way and get things fixed and stories right, and maybe he'll realize he has a problem. And I agree with gwilly. Question everything. If his story changes, question him and call him out on it. Don't let it slide. I know its hard to be in that kind of position and it causes a lot of stress and some other emotions that aren't healthy in the relationship, but if you don't start fixing it now, it could get a lot worse. Just be there for him. Don't get mad, and tell him during that time he has this free card, anything he says, you won't judge (and you have to stay true to this, no matter how shocking some of the truths might be), and you'll be there for him no matter what's happened, so he knows he can be honest with you. It's like a drug or addiction... "I can stop any time I want." But you can't.... It's built into who you are and you need to work at it to get it fixed. Let him know there are people there who love him and care about him, no matter what he's lied about. And if he lies after that free time and doesn't fess up and doesn't care to admit to his problem... it's however you want to deal with it. Whether you want to start talking about a therapist, or some other option of maybe working things out if he decides to work on his problem.