Would you allow your boyfriend to spank you?

I just started to date this guy. Let me tell you he is 4 years younger than me. He is way mature for his age and kind hearted, respectful and gentleman. I know he is old fashioned and he likes to spoil the girl he's in love with. That said I'm the girl. Never been in such a healthy relationship. We were friends for 6 months before starting to actually date. After a few dates he started to say things like: "oh let me pay for this dinner" ,"I am serious" , you'll be in trouble if you'll pay the bill". Didn't take him seriously and paid. He was looking and gazing at me playfully :you'll see what happens when we go back to your place". So we went back to my place and he kept his promise. I was laying on my belly when he actually started to spank my bottom. The first slaps were really gentle. More like love taps. I proceeded to complain like :" aww what was that for?" His answer was :"shut up, you like it, right?" This is me punishing you, bad girl" I had nothing to say so he took my silence as a "yes" and proceeded to spank me more and those hurt a little bit.
My question here is :"isn't it too early for him to reveal this kink? " Also please note that we didn't do anything sexually yet. We are taking it slowly. What's your opinion on this whole situation?
Would you allow your boyfriend to spank you?
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