Tutor is upset cause I won’t study with him alone for safety!?

So my tutor and I was discussing about what time he wil come to my home to tutor me. I told him he can come at 9-10 am. Then I was talking to myself that my dad is gonna be home at that time so it’s ok. Then he asked me why cant he can tutor me if I'm alone. I told him for safety reason. Then he got really upset. I told him I didn’t mean it like that and said I'm sorry if it hurt his feelings. Then he was silent for a long time. ( He is very talkative and It was super akward) Then he told me I think too negatively and he was hurt. Then he was going on about how long we know each other. I said he taught me for like 2 years.. He said It’s the way I said it I was too straight forward.
It’s kinda weird because like I'm a teenage girl so it’s obvious that a person who is not related to me can't enter the house when I'm home alone.. It is a ridiculous question why he can't tutor me when I'm alone. Then he gets upset when I tell him it’s for safety. And tells me I'm too negative. Like no I'm not.. I already experienced men being absolute creeps..
Whould you be upset if you were in my tutor's place? I don’t get what I did wrong, he looked really sad when he left so..