Oh,sweety,I am sorry to hear that this has happened to the both of you.It may sound shallow but my only suggestion to you both is to cut out the drinking.You are both young and even though you love one another alot,your maturity in the relationship might not be at its highest,atleast not for this sort of situation.If you both decide to do this sort of thing again,figure out wether either of you would have done it had you NOT been drinking and decide IF it is ever to occur again,which it sounds like it probably will not,that you both be completley sober and that way you will both be completley aware of what is going on and boundaries will most likely not be crossed.It doesn't sound to me that the situation it's self is the problem,probably more so the shame and guilt you both feel.Speaking from experience,it does go away but sometimes might need some help from others like counseling or something to the matter.Good luck to you both!!!But again,ALCOHOL and RELATIONSHIPS don't mix well at all!!