Myboyfriend of almost 2 years used to have a ...

I think that you should tell him that you are feeling badly about something that happened, and that you know that you reacted badly and that you were being overly-emotional, but that you saw these emails on his computer and didn't want to see how another woman loved him, and deleted them.  Apologize and say that you hope that he will forgive you for this, and that he isn't too upset.  You shouldn't have done that.  You should have communicated with him and asked him why he saved all the emails.  I hope that this will all work out for you. Good luck.

You must tell him. You didn't have any right to delete those files and you must be honest with your boyfriend. I think you should tell him that you're sorry and that you were feeling insecure at the time and therefor acted out of that emotion.

You need to talk more to your boyfriend and tell him how you feel. Give him a chance to make you feel better about your relationship. I also don't think saving those emails necessarily means anything from your boyfriend's stand point but the fact you were so suspicious does!.

I think that you should tell him and at the same time ask him why he saved all her emails but do not save yours, I also think that there also other things that he is hiding or keeping from you.

I would let him know that you know about this person and let him tell you if he will.

good luck in what ever you do 

You have been bad and you deserve to be anxious about it.  I suppose you can justify snooping in your boyfriend's private mail because you obviously don't trust him.  Whether that lack of trust is in itself justified, I can't say, and I doubt that you can either, or you wouldn't have been snooping into things that happened before he met you.

   Deleting his old e-mails was a very wrong thing to do.  You can probably escape the blame if you keep your mouth shut about it and possibly tell a few lies if he mentions it.  But is this how you want to manage your relationship?

   You have to confess to your misdeed and take your lumps.  You have betrayed his trust and shown disloyalty, and he will have to make an effort to forgive that.  You have destroyed something that was his that you can not replace.  The reason he kept those e-mails is a separate issue that should have been resolved in a vastly different way.  There are good and bad reasons for saving those e-mails, and your pre-judgement of his reasons without knowing them shows us much more about you than it does him.

    He is very lucky to find these things out about you before you two got married.  I see very little hope for your relationship if you are so insecure and jealous, and that you are willing to show so little respect for him.  You have a lot of personal issues to work on if you ever hope to be happy.  I hope that you do work on improving yourself as you deserve the same chances for happiness as everyone else.