Is it cheating if ur boyfriend gets hard of other women

So I recently started dating this guy, everything is going great but when I asked him about his past he told me that he has went to strip clubs and even bought private dances, I asked him if he would do that in a relationship, he said that he wouldn’t buy a dance but that he would still go into the strip club if his friends went in, honestly I find that weird and I don’t know if I’m just overreacting or if it’s valid, I asked him if he would ever get hard from another girl, he told me that if she’s attractive and flirts with him he would probably get a boner but not get “horny", which confused me, he knows that I don’t tolerate cheating and would never stay with him if he did, but he also tells me that his friends has cheated before and bought dances from strippers and told him to not tell their girlfriends, so I’m scared it will happen to me next