Who should pay for the damages?

My partner and I were play fighting, I like jumped on his arm and his elbow went back and we both forgot my laptop was sitting there and yeah smashed screen. His elbow went into it but I think it's my fault, I did forget to move my laptop, it's my responsibility and I jumped on his arm but he is insisting he pays half the cost for a new screen. Who do y'all think should pay what? I personally think I should pay 100% but he is insisting to help with the cost. I'll feel so bad if he pays