You really don't unless you have proof, so you might as well be with him if you kind of trust him.
ok plz tel me how do you know if your boyfriend is cheating on you?
Ask him. He'll know.
if there are romers and evidnce u know
Yes well i don't know.
Address him about it face to face.
The only way you will know if and where your boyfriend is cheating is either ask him straight out (he may lie about it) or, take a girlfriend with you on an evening he should be with you and follow him.
You should tell the other girl and both break up with your boyfriend.
cheating is doing anything you wouldnt want your wife/husband or girlfriend/boyfriend to know about
i will forget him and know new boy friend
well she may not pay much attention to her boyfriend and is hanging out with other guys and maybe flirting with them.
It's important to have an open and honest conversation with your boyfriend. Express your concerns and ask him directly about his actions. Remember to approach the situation calmly and rationally to have a constructive discussion.
If he knows all your likes and dislikes, he isn't cheating. He cares what you like and does that only.