Idk if I’m ready yet

Okay so, I’m a virgin and my bf is not. He has a lot of experience with sex. He was my first kiss and that was only 2 weeks ago. We have already done so much. I already gave him head and he fingered me already. He wants to have sex soon, and idk how to feel about it. I don’t think I’m ready to lose my virginity yet. Like I want to have sex with him, But once you lose your virginity it’s gone. He keeps asking for it while he is fingering me and it’s honestly a huge turn off. All his previous girlfriends slept with him so quickly, and I don’t wanna lose him because of me being not ready. If I wasn’t still a virgin, I would 100% sleep with him. I just don’t wanna lose my virginity. I’m only 17, so please be nice in the comments. I need advice, I can’t talk to my mom about it because she doesn’t know that I’m dating him.