Need advice

So my boyfriend and I met in the swim team at my school. He just turned 18 and I'm 15. Before you judge me on that I have known him since last year because he was friends with my sister so he would come a lot to my house. He is so nice to me and I am just really happy with him. We started doing sexual things lately but he knows I want to stay a virgin until marriage. Today he told me we need a break because he feels bad that I don't like it and he said it would kill him if I feel bad for losing my virginity. I am a religious person and I think sex is something sacred but he doesn't fee that way. Should I let him have sex with someone else? He said he is fighting his urges hard but that he doesn't want to have sex with anyone else but me. He is really in love me and he said he has never had feelings for anyone else and I know he means it. I would really appreciate a little of advice. Try nice comments thank you.❤️