Do you have a moment of thought of seeking a fling? If yes, what trigger you to have such thoughts?

Nope. I believe that if you don't entertain such thoughts, there would not be any temptations. I firmly believe that "to stray or not to stray" is a choice. If you are looking for one, it means that you are considering the idea, which means that you will need to resist the temptation if you ever "meet" one. If you give no attention to such thoughts, this problem will not exist. Just my two cents. :)