should I push him away?

I'm Christian and lately I haven't been doing so good in my faith. I've never had sex but there's been occasions where my boyfriend and I got close. 
I recently reaccepted Jesus into my heart and I have yet to change the way I used to act around my boyfriend. It's all so tempting and I don't know how to stop wanting to touch him and have him touch me. I don't know what to do.
AND THEN TO TOP IT OFF sometimes I think I should just have sex with him but I feel like something will happen in the future and I'll regret not waiting like I had originally planned because of my faith. it's so hard.