Non's and ex's

WARNING: Please don't read too much into this. I've been pondering this for a while and it doesn't actually hypothetically connect anyone. If you can't stop your mind from wandering... ask me how this topic came about. I assure you it's a pretty dull path. Just let the ramble be a ramble...

I wonder... should you set up a nonbeliever with someone who is no longer a Christian, but was at one time?

I wonder this because, without the religious strings attached to one person, it's nothing out of the ordinary. You reckon two people will get along, you put them in the same place, at the same time and chemistry does/doesn't ensue.

But with the results of believers linking up with unbelievers (the majority of the time, the believer waivers in commitment or falls away completely), if the budding relationship you connect together works, are you helping a former believer fall away further?

A further point to ponder... How long do you wait until you try to hook the two people up? When are you sure that the former believer is beyond the point of no return? Or at least enough to hook them up...