You can't unless you know your husbands passwords on Facebook. And if you do you can check all the friends and who he talk to... Good luck...
Telephone your number and see who answers.
If a wife feels her husband is cheating with women on Facebook the signs are: spending more time on the computer and ignoring the wife; their sexual relationship has suffered; the husband may stay up late at night on the computer. Facebook was meant to meet friends, but obviously there are people looking for romance; some looking for a mate. Some men or women do not consider flirting on Facebook with the opposite sex cheating, but in ways it is. If your husband shows any of the signs above then you should communicate the fact to him that you do not appreciate the time he spends on the computer (do not mention FaceBook as you have no proof he is actually cheating.) Take control and let him know you are not playing second fiddle to the computer and would like to spend time with him. Keep busy socially by either going out together; with friends or having friends over for the evening during the weekends. Plan a vacation if you can and if he has a lap top tell him to leave it at home.
that just means that the lady is cheating on her husband to be with your husband
your question is a little confusing. but honey if he is cheating on you dump him. your a person that has feelings and don't need that crap. you will find someone that want do that to you it isn't fair.
that he is cheating on you and that he is stupid and you need to find a new husband.
Ask him did he do it , and if he didn't go on Jerry Springer .
When a neighbor's husband is cheating sometimes it is better to let her find out on her own. It is common when a friend tells a woman her husband is cheating that she will verbally attack the friend rather than to believe her husband is cheating. She also may well be suspicious of her husband cheating on her and it is their private war.
A woman that comes home to find her husband cheating and joins.
Twilight.
Unless you find him in bed with another person, you won't know for sure.
Dave Barry once wrote that women should ask their husbands this question to find out if they're cheating, going on to say that if their husbands said "Oh, the woman I'm having an affair with? Her name is Norma Hemlicker of 244 South Cedar Street" then their husband was probably cheating, but if they answered with something like "Who is WHO?" or "What are you talking about?" then their husband was clearly being evasive and therefore probably cheating. In other words, if someone asks you this, you're probably hosed no matter what answer you give.
It would be very difficult for you to find out if your husband is on an online dating service because he would probably be under a username you would not know. If you have a trusted friend that is computer savvy they may be able to help you out or, if your really suspect him then hire a detective for a week or two because your husband, if cheating on you could quite possibly be meeting with one or more women.