We also have to keep in mind that also women get pregnet and also get peroids and then the man can not fufill his desire in one cause he is forbidden to do so and the other it would be hard on his wife especaily in the later months and the man goes out of the house and runs into all kinds of fitnah so it is nobale enough that he wants to save himself and yes it is from good character to tell his first wife and see how she feels because you do not want to take a second wife while your first wife is angry with you and then takes it out on the second wife but know their are many reasons why a man might want to take a second wife and who says that a man can not marry a women in her late 20's or 30's out of desire and attraction. Not only young girls in there teens or early 20's are attractive but the Prophet also said marry those that can have children and younger women have a better chance of producing a health child or even having a child and Allah knows best. And wanting more children is one of the best reasons for taking a second, third, or fourth wife. Sometimes women can have children put takes a few years just to get one and women just get pregnant easly. And it is enough that Allah gave man this right and did not tell us not to marry out of desire nor did that Prophet :saw2:. Also know that other Prophets married more then one wife, Ya’qub, upon him be peace, had two wives and Sulaiman, the son of Dawud, may the peace of Allaah be upon both of them, collected ninety-nine wives and he visited (i.e. has sexual intercourse with) all of them in one night, in the hope that Allaah would bless him with a son from every one of them, who would fight in Allaah’s cause. So if one want to have children then why should he not marry a young wife and then he can teach his children the Quran and Sunnah upon correct understanding and strengthen the muslim Ummah. Also women are more in number than men, as censuses continually prove, a man may possess so much physical strength that he needs more than one wife, in order that he may be able to indulge his desires in a permissible way, rather than in a prohibited way. Otherwise he will be forced to repress his desires, something may prevent him from fulfilling his needs, such as menstruation or postnatal bleeding, or anything else that prevents a man from fulfilling his desires with her. So he may need another wife with whom he may fulfill his desires, rather than repressing them or committing indecency. It is also from the fitrah of men to want more then one woman as you can see in sociaties were man can only marry one woman it lead to men cheating on their wife. If I have said anything wrong may Allah forgive me. What a said is not a specific reply to anyone I am just put this out there because I know some people are reply to what they would do or they feel about there situation.
:salam2: 
he loved Aisha (radiyllahu anha) more then the others but he treated them all the same in terms of care.