How Can I Address My Discomfort With My Boyfriend S Sexual Expectations, Including Cybersex And Physical Touch?

Hi , I am in ldr with my boyfriend for about a year. We have a good understanding between us. He is really good person. But I am not the person who can do sex not even cybersex with her boyfriend. My boyfriend is really into this sexual pleasure thing and whenever he talks to me regarding having a cybersex, I don t feel good.He tries to engage me into it but I don t want to do it unless I am married to him. Even when we meet , he tries to touch my private parts while watching a movie or so which I don t like at all . I am unable to confess to him that I don t feel anything good in these things. I fake orgasm everytime when he wants to do cybersex. What should I do?