I'm 30, male. My bf is 29, male.
We've been together for 10 years exactly and through it all he's been very introvert and shy due to an abbreviated psychological diagnosis.
We've always been everything to each other. The greatest love story ever told. 

Lately, though, he's become extremely extrovert. Lots of new friends. Less time for me. And now I discover that he's been cheating on me for at least two months with one of said new friends. 

Confronted, he broke up, explaining that he can't be monogamous anymore. He wants to be able to sleep with other guys. If I can't live with that it's over, he says. 

I love him so much. I mean...  10 years of love and dependence. He is 'in my very heart tormenting me'. I can't imagine life without him. So I've accepted we try an open relationship and see where things go. 

Today is valentines day. Right now as I write this he's at a friends place hanging out. Banging, as they say. I'm at home drinking alone. 

He loves me very much and wants to be with me, but he wants the open relationship. 
And though I feel a little weird and even sad right now, I want to make it work. 

Do you have any experience with this kind of solution? Will the pain go away? Can an open relationship survive if we have specific arrangement in place? 
Or is it doomed to fail sooner or later?
user
Boyfriend want
assistant
I'm 30, male. My bf is 29, male.
We've been together for 10 years exactly and through it all he's been very introvert and shy due to an abbreviated psychological diagnosis.
We've always been everything to each other. The greatest love story ever told. 

Lately, though, he's become extremely extrovert. Lots of new friends. Less time for me. And now I discover that he's been cheating on me for at least two months with one of said new friends. 

Confronted, he broke up, explaining that he can't be monogamous anymore. He wants to be able to sleep with other guys. If I can't live with that it's over, he says. 

I love him so much. I mean...  10 years of love and dependence. He is 'in my very heart tormenting me'. I can't imagine life without him. So I've accepted we try an open relationship and see where things go. 

Today is valentines day. Right now as I write this he's at a friends place hanging out. Banging, as they say. I'm at home drinking alone. 

He loves me very much and wants to be with me, but he wants the open relationship. 
And though I feel a little weird and even sad right now, I want to make it work. 

Do you have any experience with this kind of solution? Will the pain go away? Can an open relationship survive if we have specific arrangement in place? 
Or is it doomed to fail sooner or later?
user
boyfriend cheated
assistant