Turning celibate whilst being in a relationship

Myself and my boyfriend are 20 and we’re each other’s first everything. Although some might think we’d be unequally yoked because we follow different religions, being with my boyfriend has actually strengthened my relationship with God. The only issue is fornication. He waited to have sex with me for a year and a half, we’ve almost been together for 2 years so we haven’t been having sex for long but now i’m thinking to wait til marriage. Have any of you turned celibate through your relationship? Any general advice on the celibacy and even interfaith relationships? Thank you ladies God bless!