Listen to what you are saying in your letter... you guys have been seeing eachother for a year. You have the right to be upset when she acts like that bc YOUR her bf not HIM! Getting druk at his appt is not right, not allowing you to come with her, talk to her, or anything of the sort while she is around him means she has something to hide from you. Im sorry, but the time she spends with him should be time reserved for you. You can be friends with an ex, but it doesnt sound like she is 'just friends'. You should take priority over him if she is for real. She is using you, and hurting you and she is disrespecting you with everything she does with him. If she has said that shed chose him over you...well there is a major sign that she isnt worth your time and is simply playing games.
Kick her to the curb, shes upto no good and chances are, you deserve WAY better!!
i agree with you, bluesummer