Betrayed, lost, and confused

I've been with my bf for the last 6 and a half years (I'm 25). We've lived together for 2 and I took a job 3 hours away and moved in June. I've travelled back and forth mostly to visit since my schedule is flexible. It got old and I complained at which point led to threatening not coming back, and then he said ok. I couldn't accept breaking up because I've so in love and he's my best friend, my whole world. Ended up taking a break for a month instead to re-evaluate our feelings. I knew it was over but made one last trip to visit him and my other friends in old city. Showed up drunk and uninvited (I know) and he was home and let me stay over, but he ended it. I'm beyond crushed. Then while hes taking a shower I snoop his facebook and find out hes been screwing his neighbor, my supposed very good friend whos been talking to me throughout the break, whos getting married in 3 weeks!!! I went to her bach party, he was supposed to go to grooms. We were invited to the wedding. I told my x if he goes to either event I will tell the groom. I feel so betrayed and hurt so deeply. At the same time, I miss my x so much its killing me. I still want him back despite the gory details. I'm realizing more and more how much I've let my life revolve around him, and that there aren't many other things or people that make me happy in life. I feel like a shell of a person with nothing going for me. I'm terrified of meeting new men because I have very little happening in life that doesn't relate back to my x. Like I have nothing to offer. I've never felt so alone, lost and hopeless, and I don't know how to deal with it. Any guidance is greatly appreciated.

well Katie I can understand how your feeling right now because your breakup is a huge upheaval after all these years with your bf. You've created a bond with him over the years and centered all your plans around him and don't deserve what he's done to you but you should try and focus on building yourself up away from him.try new hobbies, or certifications to advance your carrier most of which you'll find are not only financially gratifying but also confidence boosting-life has a lot more to offer than you presently think. Your bf staged what I can call the greatest betrayal and possibly this was his reaction to the distance after you moved out but it doesn't justify the fact that he cheated on you with a mutual friend for that matter. Telling the groom will only create a chain of reactions which will not only ruin the wedding but also your respective relationships with the people involved,you can't hurt one without hurting the other. talk this out with your good friend to try and understand why she slept with your bf and deceived you the way she did. Its normal to have an attachment to someone you've known for ages but when it puts you through this much pain its best to let go. Time definitely heals and I suggest for the time being you cut contact with your bf and keep your cool when you meet up for the wedding,remember it's not your responsibility to spill the beans about your friends infidelity because they'll be a lot of damage control to be taken care of and in your current emotional state it's not a great idea to get embroiled in all the drama. When we lose someone or something the first reaction is denial which is what you must be feeling because you believe you can make things work despite all the gory details. If he's capable of being insensitive enough to cheat with your friend he's capable of hurting you lots more. Do your heart a favour and steer clear of him, possibilities for love a limitless and I'm sure it'll find you someday.just focus on yourself and showing how beautiful and strong you are. Your bf has just lost the best thing he's ever had because gems like you who love people no matter the pain they've been caused are hard to find.