Fuck boy or not?

Okay so I'm 15. Im a freshman in highschool and I've never had sex I've only kissed one guy... This 19 year old senior has been talking to me on and off for about 3 months.So far he has lied about his age to me.. He never stops talking about taking my virginity and he don't ever wanna talk to me in public at school or anything.. He's trying to get me to sneak out with him tonight but I just have a bad feeling about him. He's slept with over 20 girls but he claims im "the one"... I've never really been faced with this kinda stuff so help me out please and thank you!!❤️❤️