You may be suspicious of your boyfriend whether he is honest or not. If you want to find out the cheating boyfriend then you must be able to assess his attitudes and behaviors. The behaviors of the cheating boyfriend will not be the same as that of the honest person. If you have your full concentration on him you can easily find out every inch of information regarding his behavior and conduct.
You may conduct some tests to get hold of the cheating boyfriend. If you find your boyfriend hanging out with his friends late night and come home very late then he is the culprit. Also he may not return back soon from simple shopping. You can find him immersed in some deep thoughts all the time. When he is calling you affectionately he may use some other name than yours.
The cheating boyfriend will be very careful about his looks. He will take more time to dress up especially when he goes out at night. Then you can smell the rat. He works late and goes home late. He wants to work out in the gym regularly. If you want him to take you with him, he may not easily give his consent. He will try to be away from you. You can easily find out your cheating boyfriend if his sexual desire for you is diminished. If he avoids you in bed then surely he is having a connection with someone else. This will also be reflected by avoiding you or loving you lesser.
A cheating boyfriend will not attend the cell phone in front of you. He will move out of the room when his phone starts ringing. When you ask him about the phone call he will retort back angrily and will not give you a responsible reply. The characters of cheating boyfriend will be different from that of the normal one. He will get defensive and be ready to fight for no reason at all and is easily irritated.
He will say lies quite often and carries conflicting stories with him. He will have that gut feeling which will easily reveal the cheating boyfriend. He received suspicious phone calls and will isolate himself from the society. He will use his computer excessively especially when he is alone. He will be guilty but still would not want to submit to you. If you handle this situation carefully with greater patience you can win him back.