But he says he wants to share his religion with me.

Sharing your religion with others is a good thing. But I suggest that your friend doesn't know the difference between sharing and imposing. If I have an apple, I offer you half and you accept my offer, then I have shared with you. But if you say to me "Thank you, but I have already eaten" and I keep insisting that you take half the apple until you finally give in to my pressure, this can hardly be called sharing. People like your 'friend' try to disguise their bad behaviour by calling it 'sharing', 'love', or 'generosity', but by whatever name they call it, their behaviour is still just rude, bad manners and selfish.