BOYFRIEND HELP BIG TIME!!!!!!!

I been going out with these 18 year old guy and Im 15. I really love him and he loves me also. One night I sneeked out to see him. When I came back my mom was witing for me in my bedroom. My brother had snitched me out. Next day my mom said to get my stuff ready because I was moving out from that room. I said no that she didn`t have to worry because I was moving out from the house. She got mad and she took me to the police station. There they told her alot of stupid stuff that she wants to do now. She said that she can get him into jail and all that. And she is going to do me a drug test and some other test to see if Im still a virgin. And she is going to find out that I do yayo and pot. And I am not a virgin anymore. Now I want to brake up with him so I wont get him busted, but I really dont want to. I dont know what to do. What should I do? I really love him alot and he loves me to, he proved it millions of times. Cause yall know that some niggas just say that so they can get you and do what ever they want with you and them leave you. And he aint like that, he dresses all thugish and all that and yall know them niggas like that play on you and all that, but these nigga aint like that. And I dont know what to do. What should I do?