Lies & Marriage Counseling

Relationships/Marriages can be very difficult. A little background: We have only been married a little over a year and have a 1 year old child together. It's definitely been a tough year, most of our issues I believe are pretty typical of new parents and new marriages but my husband can be VERY dramatic and tends to want out and not try to work things out. About a week and a half ago, he started acting really distant and arguing w/ me about our relationship and wanted a separation, just out of the blue. it was very strange to me. Then I caught him in a lie the other night (though he won't admit it, he backtracked his story). He now is acting nice (I think out of guilt) We are going to start going to counseling next week, but my question to you is- How do you get over a lie? Honesty, is SO important in any relationship and how can I trust him? I love him to death, but he just made our issues so much worse. Thanks for any advice and opinions in advance. I really want our marriage to work but...