Not sure what you mean by the 'set' of rules it comes with? Do you mean the common sense rules that govern a relationship such as don't boink anyone else. Or does your relationship have special rules that you had to agree to?
If it's the latter and all you did was help an old friend when they found themselves in a pickle. Then I suggest to remove yourself from this relationship.
I see nothing wrong with helping an old friend in a time of need. In fact, it probably falls under the set of 'rules' that govern friendship.
thing is with my girlfriend right now is that one time i did talk to a girl during work, like mutually talking about things such as school (also a note is that the girl works next door and we sometimes see each other say like throwing out trash or running for supplies). However, she feels like this is how 'cheating' starts and although i did not have the intention of having any feelings for her or anything like that, she assumed I did. I eventually added her on facebook, msn (without my girlfriends knowledge) and she was greatly hurt that I did that. I thought i was just mutually adding another friend in my knowledge and nothing more.
I've sat down to talk to her many times about this problem and apparently she always thinks that she is the right one in this relationship. She sets up limits and boundaries all the time and I truly try to appreciate them and follow through as much as I can.
The girl I picked up was drunk and she was an old time friend. However, shes the type of girl that hangs out with males quite often and my girlfriend thought I was being used because 'i'll just be another guy to her'. The background story I told of her isn't that great either, since I decided to tell her a lot of things. Like she has ticked me off sometimes. During the time she was drunk, I helped her up the stairs to her house cause she was too unbalanced to get out of my car.
I assume she takes exception to this because 1) I told her a lot of negative things about her and 2) shes a girl...and I have a girlfriend and she just calls me a sewer rat and other grunting names for even not notifying her. I tried explaining, but it never works.