After a 14 year marriage, I found out that my wife was having an affair with my best friend! How do I go about starting over?

LikesPlayingDoctor
So my wife and I have been together since we were 14 (19years total) she's literally the only serious relationship that I've ever had! My best friend, or I'll call him my ex best friend actually, I've known him since we were both 13... We've always been really close except for when he left to go to college in Minnesota we lost touch for four or five years. Over the last two years or so we have been really really good friends, hanging out on almost a daily basis! I noticed that my wife's behavior was askew from her normal behavior. Around October 2014, there was a couple of times where I was pretty sure that she was lying to me about being with one of her girlfriends or whatever. Long story short I started getting suspicious of what was going on, and one night when she was supposed to be at her friends house I went there also and she wasn't there. At that point I had this wound up ball of fear in my stomach I could feel that something is definitely wrong! I went several places looking for her, she would not answer her cell phone or text. And the last place I looked which to tell you the truth I had no suspicion of really, and I felt bad for even doing a drive-by! But this last place that I went was my best friends house... And bigger than shit there was her car! I was so upset that I was literally hyperventilating 50 feet from his door. As I was going to approach his door and knock they both came out holding hands, laughing giggling, and hair looking like bed head all over the place! Things were obviously trifling! They didn't see me at first but were walking towards me, as he noticed me they stopped in their tracks and had a oh shit look on their faces especially his. Here we are three months later she has left me for him, I am obviously devastated but I want to move on. I really only have experience with my wife and not with dating so much! Anybody have any tips on me moving on more easily or finding a girlfriend, because I'm going crazy! Any advice? Please?
After a 14 year marriage, I found out that my wife was having an affair with my best friend! How do I go about starting over?
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