I think to have an accountability partner comes from being friends with someone for some time. To just show up to a small group (as great as it may be) and expect to have an accountability seems to be a bit unrealistic. If I am struggling with a deep issue, I probably won’t find the person I need to talk to in a group of other guys I just decided to join. Perhaps over a year or so I will become a good friend with someone in that group and will feel I can pour my heart out to him but it is something that won’t happen after one or two meetings.
Is accountability important? I think so. But I think it is only going to come out of a relationship with someone who earns your trust and likewise. It may even come out of a group that you hang out with often. The sad part is that many churches want to see great small groups develop but when a group of friends are always doing something together and don’t let anyone else in, the church will try to dissolve it when in fact this is a great thing. There are some cliques that form that truly are a non-healthy situation but a group that just enjoys each others fellowship all the time is a healthy clique and quite possibly a strong organically grown “small group” with great accountability.