Cutting people out of your life...hmmm?

Just the other day I was having a conference call with a few of my fellow college alumni. We are all good friends and have decided to throw an event together. For the past couple of months we've been in contact talking about logistics, life in general, and future plans. One who is a very good friend of mine is actually an ex-girlfriend. Somehow out of nowhere she said that she was cutting me out of her life (lol...shakes head in disappointment). At first I thought it was kind of funny, but then I deduced that it was a really mean statement. I thought our friendship was beyond that. Never had I felt that I was going to cut her out of my life, because I still feel that we are good friends and if ever I was to have a special moment in my life I would want her to be there or know of it. Her argument, basically, was that recently at church (I'm not sexist or anything, but women in general, who are spiritual and have been brought up in the church, take everything their past says for being right...sorry) her pastor said that when you enter a stage in your life (e.g. being married) you have to cut people out of your life, so that your past feelings will not pull you back-n-forth from what you are building with your newly found partner. I felt hurt, but if she really did it in the future, that would prove to me how much of a friend I was to her, because I wouldn't do the same to her. I agree that certain people do need to be cut out of your life, for example, if there is a particular someone that the only relations you had with him/her were sexual and you were seeing someone else and trying to have a serious relationship, then maybe you don't need to be around that person who you had these strong sexual relations with. On the other hand, though, I feel that if someone who you have known for a long period of time and they are important to your life as just being friends you don't have to take drastic measures in cutting them out of your life. If your man-enough/woman-enough to marry someone then you should be able to conduct yourself accordingly around your friends. If you have a problem being around them, then you're just not grown enough to put what's in the past, in the past. Everyone is entitled to their own opinion, but have your own opinion. Something that I really dis-like is when people all of sudden when they hear something from someone take it for being the truth, when it sounds so good, and right; they never took the time to think about it and formulate their own opinion or to even ask questions. (sigh) All right. That's enough for now. I wonder what others think?