How do you find out if the NC is cheating?

Are there any red flags or signs for realizing if my "N" boyfriend is cheating? I have a feeling in my conscious now and then about certain things he is saying...I feel like what he says sometimes are not true, and if I was to question him, he would flip the conversation on me, and pick a fight with me some how or some way. I've heard other woman talk about experiences they have been in the past with controlling men that resemble my boyfriend. Each story I have heard they end up saying that they found out that they were cheated on by them, i would like to find this out for myself but I dont think he can ever get caught in any kind of act. Narc's are smart, I know that much...and they can out smart people with a blink of an eye..but I know there are techniques that I can master to out smart him, as well as, catching him in his tracks!!
I know you have a busy website going on and this might not even be "goldie" but i really would appricate if some one can get back to my question... I am only 19 years old and ive been in this crazy realtionship for almost 3 years. Ive disapeared two times already, and ended up coming back. I know I need help.

Jul 10 - 11AM
cdngemini
cdngemini's picture

Jay Blue

Jul 10 - 4PM
Goldie
Goldie's picture

This is Goldie

Jul 10 - 10PM (Reply to #2)
jay_blue
jay_blue's picture

He could be cheating on me

Jul 11 - 10AM (Reply to #3)
Goldie
Goldie's picture

You already have your answers

Jul 11 - 6PM (Reply to #4)
jay_blue
jay_blue's picture

m/o?

Jul 12 - 9PM (Reply to #5)
Goldie
Goldie's picture

short for "modus operandi"

Jul 29 - 10AM (Reply to #6)
Mycutefrenchie
Mycutefrenchie's picture

Could his new supply have switched from me to his son?

Jul 10 - 10PM
jay_blue
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I am interested on what you

Jul 10 - 10PM (Reply to #8)
Lovely1
Lovely1's picture

PIs are expensive. I would

Jul 11 - 7AM (Reply to #9)
cdngemini
cdngemini's picture

BE SAFE

Jul 17 - 3PM (Reply to #10)
baab
baab's picture

this is very true...listen to

Jul 17 - 3PM
baab
baab's picture

for a narc fidelity is akin