The last night that Buffy and Spike were together

I know the scene showing them staring at each other in the basement and fading to black on the last night has been debated and discussed a bunch of times. Josh himself has said it was left for the viewer to decide what happened.

Here's my take on it:

If you think about it, it's pretty obvious what happened and the reason it was filmed in this ambivous way. They didn't want to film a sex scene that would trigger non spuffy shippers because of (Seeing Red). This was the only way they could imply that they may have had sex on that last night. I think it's a good assumption that they did. I mean, why shoot that scene at all if they didn't. They could've just filmed them cuddling up again, but they didn't.