Needing advice about joining

[mv93]

I've got a little bit of a dilemma (and be patient, because it requires a little bit of background info). I'm a second semester sophomore, and I rushed both freshman and sophomore years. Freshman year, I decided I didn't feel comfortable enough at any of my 3 remaining houses to accept a bid, so I didn't fill out a bid card. I hadn't planned on rushing my sophomore year, but I became really close with four or five girls in one house, and they talked me into it. Unfortunately, I had had a bad year academically (my major was definately not something I was suited for) and my GPA was under the requirement for every house on my campus except one, including the one my friends are in. I dropped out at this point, because the only reason I had rushed was to (hopefully) be a part of my friend's sorority. Since rush ended, I've become very close with most of the girls in that house; I'm there a few nights a week, and my nickname is "Honorary" (since they consider me their honorary member). The problem is with another house. Both times I rushed, I was pursued pretty heavily by this other house, but I never really considered joining them, because, although they are an amazing chapter nationally, they don't have a great rep on my campus. They invited me to some spring recruitement events, and I've gone to one and plan on going to the next one. They are really nice girls, but I'm having trouble deciding what to do. So here's the problem: I don't want to alienate my friends in the other sorority, because they are my best friends, and I don't want to feel like I can't hang out with them as much. Also, I'm worried about the rep of the spring rush house...would it be worth it to join a sorority at this point, or should I just keep things as they are?
Thanks for sticking with me through this ridiculously long post, and for helping me out with this!