Is this guy who is not yet my bf messing with my head? ?

I met this guy on a night out we have been texting. He picked me up in his car. Everything was going gd. But when he lent in for a kiss he bit on my neck instead real hard for like 5 seconds. Then he spat chewing gum in my hair. He says nice things to me all the time. But another concern is. We was going up a steep hill the other day and where at the botton there are cars coming from each side. He rolled his car down it a bit and sed wud u like to die. And if I was to roll all the way do u think we wud survive? One min he can say nice things and call me babe and the next he will be real nasty. What do I do?