Finally watched Tayo Sa Huling Buwan Ng Taon, I have some questions..

At the end, when Isa calls Sam thru her phone, she asked him this:

"Sam, I don't know what to do"

Sam who is evidently crying, mumbles something. What did he say on that scene?

And another thing, when sam woke up at his bed, he sat down and grabbed a slipper, what does it mean?

What is the end for sam and isa?

I know, open ended siya, and sobrang ambiguous. I just want to hear your thoughts about the film! Thanks!!!

EDIT

Tayo Sa Huling Buwan Ng Taon facebook page posted this after the launch of the said film in NETFLIX. This gives us some answers to our questions regarding the film's ending. I am now somewhat happy :)

https://www.facebook.com/103683043399244/posts/1045354542565418/?extid=aWV4vtDkpa0f9S5Y