As everyone says, it was only human to read the email.
But what if you hadn't read it? Wouldn't that just make you a pompous ass for being 'above' such a human frailty? (And no you're not a pompous ass sweetie, you're a warm and loving person who gives of herself generously, to make life better for others!)
Sometimes I think people need to know things, to help them understand, but nobody feels comfortable about telling them.
Let me tell you a little story. Are you sitting comfortably? Feet up? Then I'll begin.
A long time ago, my parents moved from their home to a new home on an Island which lay just off the coast. My younger sister was still living at home, so she moved with them. But her school was still on the mainland and it became a 2-3 hour journey travelling to school each day and another 2-3 hour journey home. So my sister moved in with my aunt, so she could walk to school and just went home to the island on weekends.
Now my mum paid my aunt (her sister) for my sisters board and keep, but my aunt felt guilty about taking money from her own sister. So when my mum's birthday came around, my aunt bought her an exceedingly expensive bottle of perfume as a way of giving a little back. My mum LOVED the perfume and my aunt was thrilled that my mum loved her gift!
Then my sister, who as the baby of the family is a spoiled little brat!

decided that she ALSO liked the perfume! And being a sticky fingered little brat, she pinched it and took it back to my aunt' house so she could wear it to school everyday and show off to the other kids!
Of course, my aunt saw it in my sisters room and was extremely offended because my mum had said how much she loved it and my aunt thought she had lied and then given it to my sister because she actually hated it.
Meanwhile, my mum was cross with my sister, but refused to tell my aunt that her own daughter had stolen it from her. So we were at stalemate. My mum and aunt refused to talk to each other for weeks and only communicated via messages through my sister. It was pretty upsetting because they had been getting on really well before all this started!
My sister, meanwhile, was quite happily using the perfume and hadn't got into any trouble because of it. (She was also stealing from shops a lot at that time also, but thats another story!)
This all seemed very wrong to me. So I wrote to my grandmother and explained the whole situation. My aunt used to visit my grandmother (her mum) every week. So at the next visit my grandmother showed my aunt the letter. Now I had written 'please don't show my aunt this letter' but, to be honest, I thought my grandmother would forget this bit - and she did.
So my aunt read the truth and was pleased because she hated being at odds with her sister, my mum. I got told off for spilling the beans and my sister got told off for being naughty, but my mum and aunt were happier knowing that they hadn't lied to each other and the upset was all just a huge misunderstanding.
Whew! So maybe, in a similar way, you were meant to know! Maybe the original friend wanted you to know yet didn't feel they could tell you. Maybe the second friend cracked and felt you HAD to know, because you were working under a misapprehension regarding the first friend. Maybe the second friend felt it would be worth enduring your scorn just to know that your first friend could be properly appreciated.
Floppy, you're such a lovely person and I can only imagine that your friends are lovely people too. If your second friend was mean or spiteful then they probably wouldn't be your friend. I would look deeper into this and see if you can find a hidden reason for the second friends email. Maybe they were feeling terribly hurt about something.
Of course, it is your choice. I just feel that people DO go off the rails sometimes and people today tend to dump those who make mistakes without giving them a second chance or a chance to explain.
Sorry for such a long post. I just didn't want to see a nice person throw away a nice friend for what may have been a good reason- even if you don't agree with it!
Good luck with this. Hugs. :yh_hugs :yh_flower