Yours is not a unique case. You do come across many married men wanting to have a relationship with other women. So, though you can be happily married, it can happen that you fall in love with another woman. But in your case it seems that it is all about wanting sex with the other woman. You will need to analyse your sexual relationship with your spouse as there seems to be something lacking in the intimacy.
There are many reasons why married men fall in love with other women.
One is the Psychological and Emotional Need.
Just as a woman would look for a father figure in another man to fulfil her emotional needs for security and protection, a man too would look for an image of someone like mother figure to fill a void for affection and care “that woman” can perhaps give. The other woman would be caring and nurturing as well as be a source of strength and motivation in the times of difficulties. She may have better experiences of life or more confident, her proper support and guidance in tough situations will make him feel more confident.
Another reason could be “ Just for Fun”. This seems to be true in your case. It is possible for men to have a roving eye or even crave affection from another lady, as they cannot control their lust. It starts with a casual affair and quickly leads to an affair.
Since you are looking for cam chats, it means you are looking for women who are willing to give you an invitation for sex. If a man gets a signal of love or invitation to a relationship which is loud and clear then only a few will decline such an invitation. Men will easily fall in love with someone who is open, approachable and is ready to be loved.
Another reason could be that it would give you an Ego Boost. Whatever were the reasons and circumstances that connected the man to another woman, he now starts enjoying it. He feels like a super hero. The feeling that females still crave for him or there is a lady (other than his wife) who is madly in love with him and cares for him. Some men want to know and feel they are worthy of love. They also need to show off this relationship of love.
You may be looking for a woman that your wife is not. A married man may desire to have a woman with certain qualities, assets or traits that he wanted in his partner but did not find in his wife. This attracts him to the other woman. This could include sex or emotional compatibility.
We would however sincerely advise you to find the other woman in your wife and make efforts to pay attention to your relationship.