I think my light in my tunnel has gone dark

"There's always a light at the end of the tunnel". But is there? I either forgot to pay tunnel's electric bill or someone flipped the switch because I'm not seeing it. 
I've spent over a week with the issue concerning my husband. I actually feel angry typing that word ~ husband. To me, he broke promises and threw our life away and for what? Some sexual,perverted comments to a girl young enough to be his daughter who in the end wasn't interested in him aside from being friendly to her boss. He made a comment that I keep hearing over and over "I liked the ego stroke, the admiration and her attention". Well apparently social cues are lacking from him skills department aside from common sense. 
My anger isnt getting any better. I'm going to meet with a therapist if nothing else to help me sort it out in my head. Everyone thinks he's so great - don't rush into a choice Dee. Give him time to explain Dee. It's not like he had sex with her Dee. Well all of that may be true although I don't see it that way and if you can talk to freely who is to say there was sex if not with her then maybe others?
Me ~ I really need to find me. I need to figure out what I can and can't live with. In all of this he's not trying to play the victim telling me I'm being too hard on him for being hurt. LOL - I don't even have an answer for that. 
I just feel so wronged, lied to, betrayed, hurt, angry ... all of it. It's a lonely life these days. I feel so alone but in the end ... it may not be short lived.