Please consider telling her that you appreciate her honesty in telling you everything that's happening with her and OM, but to please not tell you about the gory details of their intimate R for it hurts you deeply to be made aware of them when you really don't want to know them in the first place.
Also consider not being too available to her when she needs to vent about her R with OM because once she's vented, she's ready to deal with OM once again and you end up being back to square one. In fact during the time you are listening to her venting about OM, it might be a good idea to make your conversation short (10 minutes max)and leave her with a some residue of angst against OM so that when she sees OM afterwards, she'll still have some resentment still left over which will build when he starts love busting her again. The trick is to keep the resentment for OM simering and not let it vent out when you put your confidant cap on.
If she asks you why you don't want to talk to her, you may simply respond with something along these lines:
</font><blockquote><font size="1" face="Verdana, Arial">quote:</font><hr /><font size="2" face="Verdana, Arial">"I love talking to you but if OM finds out about you contacting me and of the things you share with me, he'll get mad at you and I don't want to be the cause of discord between you two. All I want is your happiness and don't worry about me because I'm the happiest I've been in quite awhile. Bye"</font><hr /></blockquote><font size="2" face="Verdana, Arial">Why would you say such a thing to her? to demonstrate to her that you are not a weak, needy, simpering, fool that depends on her for his happiness in life.
<small>[ November 24, 2002, 03:13 PM: Message edited by: TooMuchCoffeeMan ]</small>