Haha.. I finally found the third part of this story 
Still such a cutie na ka..
Thanks to Khun Tai ja 
Ps. I expected to see Poon and Khem switch their roles in this part na ka nia.. but mai pen rai ka.. next part kor dai na 555
ดีใจด้วยคะที่เจอ~
แต่สงสัยว่านี่เป็นสายสลับกันได้แบบต่ายรึอยากเน้นให้เขมรุกคะ - -+
Ahh.. Actually Khem's nature is 'ME' not 'KE' mai chai lor ka..??
But because he want it to be their first time so he switch the role a'
For me, I think it's okay to switch back na
Also, I think Khem is more experienced than Poon too...555

Anyway, as long as they lovr each other and still be cute couple like this, a rai kor dai a' ka ^__^