*What should I do?

Ari ✨
*Im 16
So my boyfriend and I have had phone sex/mutual masturbation whatever you want to label doing it over the phone as lol, we send naughty text messages and nudes, and we tease each other by touching each other's stuff in public or something. 
I've always been viewed as a good girl so doing all this stuff makes me feel bad. I'm also a Christian so I really feel bad for doing these things. I'm in a weird situation though. Like my hormones are driving me to do those things while my mind and common sense is telling me I shouldn't be doing those things. I want to stop doing those things with my bf and be that innocent girl again. What do I do?