Without evidence like first hand accounts (seeing it yourself), pictures from a private investigator, or a confession, you can't know for certain.
If there are clues that make you suspect your partner is cheating like the classic lipstick on the collar, staying out late without telling you where they are or you finding out they were somewhere other than where they said, you should confront them about it. Your partner may have a valid explanation.
If you still do not trust your partner after being direct and confronting them about it, you should consider leaving the relationship. Trust is integral to a relationship's health, and you will only continue hurting yourself and your partner by continuing a relationship void of trust.
If you decide to work through it, consider couples therapy. Your relationship is definitely on the rocks if you don't trust each other, and usually people never regain trust without outside assistance.
It really depends on the guy you cheated with. If the guy has a larger penis than your partner, your partner may noticed that you seem a little "looser", due to stretching. This isn't a perfect way to tell, but it got me caught once!
actually you should always be honest with the one you love if he does care about you he will understand but always be honest...
you go and tell him you cheated on him and tell him how sorry you are and ask him to forgive you.
how do you know if your boyfriend has cheated
tell her that her boyfriend cheated on her. she needs to know.
Humans can simply make mistakes and cheating on a partner is a big mistake. The bond of trust is broken between the two people and it is difficult for the partner who has been cheated on to ever trust their partner again and it is difficult for the partner who cheated to earn that trust back. If you feel your partner is a flirt; it has happened before then it is wiser to walk away, but if you feel it is the first time this has happened then you should sit down and communicate your feelings to your partner and that you will not stand by and be used while he cheats and ask him to be a man and tell you the truth. Then you will have to make up your mind from there.
No move on
No
He will leave & you deserve it. YOU CHEATED ON HIM. It's not fair to him to be cheated on without knowing & it's unfair for you to leave HIM because YOU cheated. Cheating, if you want to cheat then face the consequences.
I believe they are both equal, because once a cheater, always a cheater
You can tell your friend that they are being cheated on or you do not do anything.
You shouldn't have cheated, you explain it to him before he does.