leaving ....or not

Problems about group work again,my friend sms me and stated that we both better leave the group instantly tomorrow!She don't want to tell me why now and saying that she'll explain about it tomorrow,both of us actually have talked about the problem of working in group because most of the work is usually i done by both of us!We can't stand all this anymore...not fair!!!!so we decided to leave this group if they are not manage to change their behavior... since the last sem!we'll see what will be happening tomorrow, maybe we manage to escape ... or maybe staying if they are begging us tomorrow!hahahaha!lolz!Is this really a good idea to leave that group? Since the result of both of us is okay among them,maybe we should stay to help them!Or ,maybe we had help them too much,and they should be doing their own work from now on?no......I'm going to be crazy!Why am i doing caring and pitying for them so much...but, how am i going to face them in the future, we are in the same class ,and will be for 2 more years...this looks like cutting the friendship among us,friendship among the Chinese which is the small part in this college!damned that i'm confused!maybe i have thought too much about this and...talk too much about rubbish today!