anxiety?

I married young at 20 years old. I never had a serious relationship with any boy (meaning never had sex or kissed a boy) until my boyfriend(now husband). I'm just trying to get some support on figuring things out in my own head. I have felt with anxiety for my whole life, but it seems be bad now that I've been married for almost 2 years now. my husband is young as well (only 2 years older then me) and he s kinda flirted with girls on facebook but not exactly for example(I use to have a crush on you but I'm married now, how's school?) And (I think your cute, you do a good job at work), I've approached him about these and he lied about it and deleted messages and he s lied about alot of things like smoking pot behind my back and what friends he s been hanging out with. we're currently in marriage counsiling now. but I would like to be happy again, but I can't let go of the past. he seems to have learned his lesson and I say I forgive him but I feel my heart and trust is broken. how do I go on loving him? How do I not question everything he's doing? any advise guys or lady's? I'm all ears