Im so scared guys.

I'm Muslim, so I can't have sex before married. If I do my future husband will find out and divorce me. He will find out if I don't bleed, and when I turn 18 my parents are gonna schedule me that checkup where it checks me down there. I have a boyfriend, been together for half a year and he wants sex. He's had it ablut 6 times and he knows I'm a virgin. I told him I'm not ready but I didn't say that I'm not supposed to have it unless I'm married or engaged. He isn't the person that i want to marry. He said he will wait. I want him to have that idea out of his head but guys wants sex in a relationship. If u don't give it to them, they'll cheat and get it from somewhere else. What do I do? I'm about to cry right now, I'm so uncomfortable and scared. I want the good feeling but I don't want to lose my virginity. I can't. I'm 15 turning 16 in 2 months. Should I do it so he'll not cheat on me and be happy? Or should I not do it and he'll leave? I don't want him to think I'm not ready now and will do it in a month or so or when a year. Not at all in highschool. I am willing to suck his dick and he'll give me oral. Just oral. Not dick in vagina help me woman I'm so scared