Yashvi, What you have written in your profile is a wet dream of most of the Indian men. Your question clearly indicates that you have higher libido. And its not a crime. What you have been doing could be morally wrong but its not illegal as you and others involved are (i hope) are consenting adults.
following could be some of the reasons why you enjoy it so fully
1) Forbidden fruit always tastes sweeter.
2) Cheating pleasure
3) You are the only female present and all males giving their undevided complete attention to you and your pleasure.
4) You could have been in full control and all males would have been following your whims and wishes
5) You can do those things with them or ask them to do such things which are just unimaginable doing with hubby dear. You just could not mention them to him.
6) Pleasure of multiple penetrations
However one thing i failed to understand is in your Q you have stated that you make them wear condoms which is a good thing but in the same breath you state that you do swallow their cum.Remember exchange of body fluid can lead to STD spreading. so better avoid such exchane . While kissing also take caution that it should not be prolonged and deep smooch.
And if your hubby already got suspicious don't live in ivory tower and imagine you will always be safe. He could prove to be smarter if he employes a private detective or install hidden cams. This can happen and it will leave you no where .So take an informed decision. I am sure if any untoward thing happens and your hubby leaves you no any of your other fuckers will have guts to marry you. Its fun to fuck other mans wife but very devastating if same happens with a man!
Its you life make it or break it. We only can show you the dangers , its you who have to decide where to lead your life.
Best of luck!