Mutual divorce

I am married for 10 years and have a baby. Because of many differences I lost all the love feelings for my husband and right now I am only performing my duties towards him as a wife. I am not able to give him the satisfactory intimacy sexually as a wife anymore which my husband needs . I really care for him as a human being but I am not able to love him. In 10 years there were many situation where I felt I should leave him through so that he marries a woman who can keep him sexually happy which I am not able to keep but always got scared of staying alone after divorce hence continued the marriage for 10 years taking care of home and my husband. Also in 10 years twice I have caught my husband going to call girls for sex though I don't have enough proof. In the meanwhile I met a person who became that human being in my life who understands everything about me , as if we are soulmate. The affection and caring I got from this person is something I never ever got in my 10 years of marriage. So we decided that we will get married after I get the divorce from my husband. I have discussed couple of times with my husband that I am not happy and I want divorce however I don't need any single penny from him as alimony and I want him to stay happy , get married again if he wants to. I am trying to make him understand as I m not happy , I might not keep him happy as well and I don't want to be in a marriage where I don't love my husband and feels like I m getting raped everytime he does sex with me however my husband doesn't understand and feels his life will end if I divorce him so I fear what if he commits suicide if I ask for divorce from him formally through lawyer. Also the other side of my life is - We ( the person I want to marry after divorce ) met couple of times in public places in presence of my husband and others. Mainly we are connected through watsapp messages or video calls or normal phone calls. So there were situations in video calls or phone calls where we had phone sex where sexual chats , or exchanging private pics has happened but we never had actual physical sex like real intercourse with eachother. So here are my questions I need help with - 1. As adultery is not crime anymore in India however can be considered as an abetment for suicide if incase your partner commits suicide, Can this phone sex be considered as adultery if my husband takes such suicidal step ( though he doesn't know about my love relation ) and his family puts allegation against me as abetment of suicide ? 2. To save my husband's life and my life also - how should I proceed for asking for divorce from my husband so that he doesn't take such steps and I also don't come in any legal problem ? Should I file an FIR saying my husband can be suicidal because I m asking for divorce and after FIR , asking legally with notice to my husband to give me divorce ? Please help me.