Even though cheating partners cannot tell his/her partner about it, one can use other ways to find out....
For guys, these signs may be an indication that she is cheating on you.
She suddenly becomes too busy to hang out with you.
She begins to have strange friends who also take most of her time.
She gives you just enough attention to keep you around but not enough to move your relationship forward.
She starts spending less time with your family or friends.
She begins to nag you frequently as she shifts away from the normal harmonious communication.
She stops to pay attention to you at all.
She acts guilty when you do something nice to her.
She easily becomes offended by your comments however harmless they are.
She puts her phone on airplane mode when around you.
She always has a reason why you can't meet up with her.
She freaks out when you pick her phone to do something innocuous like checking the time.
She becomes a seasonal communicator and takes forever to text you back.
She occasionally agrees to your plans but then backs out later. So guys, watch out!