is it alright to have another relationship to others even you're committed?

NO! Definitely not! All that does is cause pain to everyone. If you are committed to someone you should be completely devoted to that person. If you are with someone and you are having feelings for another on any level you should try to seek counseling and try to save the relationship or you should end the relationship altogether. Noone deserves to be treated that way. And sometimes the other person in the relationship will say its ok, but from the people I know who were in this situation, it wasnt really ok with them. They were just confused and afraid to lose the person. It's a horrible thing. It is not alright no matter the situation or circumstance.

Nope... I don't agree of it.. If you really love that person then you must be honest and faithful to him cause if you are in the relationship it only means that you both love each other but if you commit into another relationship then it only show and prove that you don't love him/her.. You are not contented with the love she/he is giving with you... And it is not good to have so many relationship because the more you will be confused and not sure about your feelings..

No, unfortunately its not alright to have another relationship with someone if you are committed to another person. Sometimes you might meet someone new when you are with someone else. And you cant really help the way you would feel for this new person. But you ultimately would have to decided.. You cant have everything.. and it is not fair at all to the person you are committed to.. good luck