You do so much need to calm the fuck down. First of all if she is cheating, there ain't a damned thing you can do about it; except maybe have a cnversation with her. Secondly, since you have not had any problems, you are on the verge of starting some with your insecurity. You can inadvertantly cause her to start talking to other guys or jsut hanging places where she nornmally would not - if you try and control her life; and if she wants another dude, cont your blessings cause it happened sooner than later (more emotionally invested). OK so you fucked up once, don't carry thatr weight on your shoulders. admit the mistake, evaluate the stupidity of it, and vow to never let it happen again and mean it! Regardless - Times like this only require that you do things to take care of yourself - while she is off enjoying hersellf. Definitely take a vacation yourself.......you don't need to brag, or do it to make her feel insecure....What is good enough for the goose is definitely good enough for the gander. Thake a trip some where where you can pick up some gear legally, and mail it back to yourself....of go lay on a beach for a week finishing your favorite novel.....The point being, that if you are busy having a good time, you won't worry so much about the good time she might be having....and in this state - if you find out later that the scum bag cheated on you...Go fuck her Mom, or best friend. Wipe the dirt off your feet on your way OUT the door, and move on!