What are some good mindgames to play with your bf to find out if he is cheating or to signal that he is?

OK so i have been getting urges of insecurity and i usually when i get bad feeling about something it be true..so i was telling him about how i was playing with my friends on the bus well actual;ly he was on the phone at he time and i was like f faking like i was going to kiss them not boys and no im not gay..but anyways when we were on the phone i had asked him how many people he kissed today and he said none and when i said how many he hugged today he started laughing and acting real strange so i left it alone so later in the conversation i Had's told him i heard something about him abut i was just joking and he kept asking what i heard and i told him we both know and im going to wait for you to tell me..just one of my mind games that i was playing with him and like he got very quiet and wouldn't talk and like he was acting very gloomy like and now it makes me wonder...so can you please help me out?? good answers please...don't want to hear no smart mouth either