I have a very similar situation. I rushed during spring and I had made a lot of non greek friends during my fall semester. When I told my friends I got a bid from a sorority and I was taking it, I was laughed at and told that I wans't going to have time for them or anything. Needless to say I bit my tongue and made sure I organized my life so that I could include all of friends at some time or another. It's very hard because some of my friends despise my sisters so I have to be careful and I can never talk about any issues or concerns I have about chi omega. It's been two years now and I have managed to include both sides of my life very well. I have a positon on exec and attend all the socials, parties meetings I have to with Chi O but I also make sure I go to my other friends parties, dinners etc. The funny thing is ZTA is starting on my campus and two of my non greek friends have been asked to start it, I think they are going to do it, and I am so happy for them. Life has very funny way of working out. Maybe now they wont make fun of me for "doing stupid sorority stuff". It's like that quote about not understanding something until you are one of them!