3 Questions? Do you believe once a cheater always a Cheater?

Tonya • Everyone is beautiful and unique in their own special way! 😊
Please help me on your views here. 😂
Do you believe once a cheater always a Cheater? 
Do you believe if a person will cheat on their partner they will cheat on you?
An do you believe people need a cool off period first at least 3-6 months before starting or getting involved in another relationship after a break up?