please need honest advice :(

i’m at a current point in my relationship where i’m starting to cultivate a deeper relationship with God and ultimately wanting that…I have been in my current relationship for almost two years. my significant other believes in a Higher Power and respects religion but does not have a relationship with Jesus. With my time delving more into the Word im starting to understand that premarital sex is a sin. He is the man of my life seriously. I love him so deeply. I want to marry him & bare our children and be with him in this flesh lifetime yet…I want to build a relationship with God…with Jesus. i’m honestly having a very difficult time maneuvering through this. I had a discussion with my significant other regarding this. he supports my decision on that but he says he has needs. i haven’t been the best partner or person i could be throughout and prior to our relationship but i want serious growth and change and i want to do that with him !! yet it seems that this is too much for him :( he is my everything :( i want to build a future with him… i love him more than words can describe but now me discussing this with him is causing our relationship to end. i’m scared ! i’m lost ! and honestly need advice. He doesn’t have his own personal faith or relationship with Jesus and i do not judge him for that. It is just seeming as if my growing religious values are not aligning with his. I don’t want to lose him yet I do not want to put God in a box ! Please send any advice or prayers for discernment in this time :( Peace and love to you all <3