Being a guy who gravitates more towards truth over grace (not to say I don't have grace but that this is my natural disposition I always have to fight against) I tend to agree with the blogger rather than all the commentators calling her "self-righteous" and "judgy." Insert Bible lesson here: When Jesus said, "Judge not lest ye be judged," he wasn't saying, "Don't judge people." Here's what he meant: Be careful how you judge because the judgement you use will be used against you. No double standards. So when I make a judgment about something (or, God help me, on someone) I have to be perfectly willing to have that same judgement put upon myself.
Now what do I do in those situations?
So this left me with a conundrum: What's worse? Knowing that what you're doing is wrong but doing it anyway? Or finding justifications, however possible, to continue doing what is objectively wrong (from a Christian viewpoint)?
I, of course, live in the former question, but it seems many of the girls commenting on Melissa's blog live in the latter. Perhaps this outlook will shine a light on the situation: Pastor Douglas Wilson once said that Christian men ought to be more ashamed of their sexual past whereas the girls, while understanding on paper how they are forgiven in Christ, deal with themselves more harshly (perhaps, in comparison to the men, more rightly, but in light of God's grace, more severely than they ought to).
To be sure, this is an in-house debate. What is being dealt with here is law & grace. For the sake of example, let's say all the men live with me in the former question while all the women live in the latter. All of us are wrong and have simply found a way to deal with it. What makes a Christian is this: having the law drive you to forgiveness in Jesus. If you haven't done that yet, forget the debate; it won't even make sense to you. This debate is for people who have been driven to Jesus by the law, found forgiveness and grace in Him, and now have to find a way to live a life in response to that.
It is one of the hardest (and most controversial) tightropes one can walk on... let's not forget that it's a blessed walk too.