Sex before marriage

I am 30 years old my man is 36. We’ve been together for 15 years. I met him when I was 15 and he was 20 or 21. We are both Christian at heart we’ve had sex for the last 2 or 3 years. It’s so great but I feel like I’m or both of us are disobeying god. I know god forgives us that’s why he died upon the cross. We had sex is because he lives in a foster home and we only see each other 2 or 3 times a month. We only have sex when he’s over or when I go over to his house. We were going to wait until we get married but we can’t because we don’t know when he can move in and all. Glad I waited to have sex until I was 27 or so. I waited until I was ready or even my man. He is such a gentleman he didn’t pressure me just waited until I was ready.