Is this weird? Boyfriend wants to pay me

So my boyfriend and I were having a conversation about our sex life and he ends up telling me that he would like blow jobs more often. I tell him that I usually don’t really feel like it and we end up just joking about it. Jokingly I tell him that he can pay me $xx,000 and he agreed saying he can “save up” in between, doesn’t really need it often, and he doesn’t mind paying. So I just laughed it off but a few days later we’re making out, about to have sex and he wants to give me money for a BJ.. I accepted and did it because in the moment I honestly didn’t mind giving the BJ for free and the money was an extra perk but now I’m like does that make me a prostitute? Is it weird for him to offer money??? It wasn’t weird between us afterwards but I’m wondering if anyone else would do this.