Friends With Managment... Is It Possible?

Is it possible to be friends with management at work? Case in point, my direct boss, C. We got to be really good friends and then got in this huge fight over a visit from our then project manager. Nothing has been the same since. Last night we had our Holiday Girl Time Gala, a private after hours event for preferred customers. After that the new cosmetics manager, whom worked in ladies wear when I started, K invited me for drinks with her. So off the two of us go for drinks. At this point I realized that although K and I knew each other well at work, she is a very different person outside of work. I like her both ways. Me I am who I am, regardless of where I am. K pointed out that become good friends with management is a mistake (K what the hell were we doing last night then?), and that I do way too much. After 2 double Bellini's she made me sign a 'legally binding contract' to not baby sit or house sit for my friends any more. They are my friends and will understand when I say no. Made me sign it then added a post script that I will only do baby sit or house sit for my very best friend, K. Lol, K that was awesome, and we should definitely do that more often!