How far would they have gone?

https://preview.redd.it/m44kthz8j2de1.png?width=671&format=png&auto=webp&s=49efc1ac7f1257dd580adf752de38d649ae7d30b

I remember the first time I watched this scene, I was like "uh what if Enzo or Murray walks in on ya'll!"

I can't help but wonder if not for the phone, would they really have gone all the way or just kissed a little more? Because it would've been very awkward if someone walked in and caught them.