I cheated on my boyfriend with my best friend
Do you love your boyfriend?
Well, I'm kinda getting bored with my boyfriend anyway.
Relationships don't always last but it is not good to cheat on somebody. They will be hurt and betrayed and be angry at you.
Cheating is fun and good.
It might be fun for you but it would hurt your boyfriend. Think of how he would feel if he found out you were with someone else.