need someone’s good advice

i always used to be so scared to have sex, because of people telling me how much it hurts, losing it to the wrong guy ect..., so i finally found a guy that makes me feel so comfortable around him and i just rlly feel like he’s the perf person to lose it to, hes the first guy ive actually opened up to the first guy to see me without clothes on the first guy to seee MY body, so we’ve tried twice and we end up not doing it bc i start to tense up down there and im not sure why ??? maybe we’re trying to hard? im not sure why i literally want to fuck the shit outta him and it DOESNT END UP HAPPENING,.... is it me? AM I NOT READY? i feel ready /: