Wow! I can't believe I some how missed this post to the forum. Confrontation is so necessary, especially in the group environment. Without confronting one another about things we notice in each others lives we miss out on so many growth opportunites! Communication about expectations is so important in any relationship. I would encourage you to discuss that with the person in question. I recently heard a sermon on the topic and you can listen by clicking on the following _link_.
http://www.moviechurch.com/sermon/most-promiscuous-church-member-of-the-year