Questions: Family & Friends

So for my own personal reasons I am waiting until I am married to have sex (this includes oral sex). I understand that most guys don't like this, I understand that this is very uncommon and unrealistic but this is something, for my own reasons I want to do.

I generally do not tell people other than my super close friends (my parents do not even know) because this is a personal choice and not really anyone's business beside my own. But I am not the stupid virgin, I know about sex, and contraception, and STI's and the whole nine yards. I am actually the one to drive my friends to Planned Parenthood or buy them condoms when they are too scared because you know safety first.

To get to the real meet of my question I have been going out with a guy since the beginning of September he is my first boyfriend but I am his fifth girlfriend. He knows that I want to take things kinda slow (we have barely gone to second base over my shirt) and he respects that given the little experience that I have had. What he does not know is that no matter how slow we go we are not having sex (or oral sex).

He is a great guy and he cares and respects me but I still have that fear in the back of my mind that he might break up with me knowing that we will never have sex. I have heard of guys that even though they said they would not date a girl knowing that she was abstinent got to know the girl and then stayed anyone (the situation with my older cousin and her husband). So I hoping that maybe that would be the situation so I want to avoid telling him because maybe he will become more invested in the relationship and build stronger feelings and not want to break up.

Two of my close friends are saying I should tell him because he might break up anyway and it is better to get it over with now, and I should not go out with a guy who can't respect my choices, and I could be keeping him from happiness with someone else.

What should I do should I tell him (even though I never really tell anyone) or should not say anything? And If I do tell how soon should I tell him?