If somebody is married and his wife is not fulfilling his wishes and desires due to which he commits Adultery so will that person be forgiven by Allah.

If that person got fear of Allah in his Heart and do not want to commit Sin so get married to another women without the consent of his first wife so does Islam allow him to do so as his wife is very stubborn and arrogant, she does not want to keep him happy in life or either want to share him with any other women.

What is the solution to this problem. Please advise.