Confuzeled

This might be a stupid question, however i am going to ask it. The guy i am with has a fantasy for being with 2 girls(i dont get that whole thing) I am so not into that!!!!! I belive sex can be the best ever with someone you like/love but not mixing it up with other. anyways the question is........... is there someway/somehow i can do something for him/to him that would somehow give him that experience with out adding someone else???????????

I need some advise on what to do while i am giving my man a blow job (which for the first time with anyone i have totaly wanted to do this for him) The problem arrises when he starts to cum..... i have a problem with the texture of it, the smell and flavor. Want can i do/use to get past this. I really want him finish him with my mouth. Help.....