Based on the personality traits you've described, I would estimate that he could be around 40% affectionate towards his lover.
While he has a mean and confrontational demeanor, his confidence and intensity might lead to moments of deep loyalty and passion, which can translate to affection. However, his rudeness, sarcasm, and moodiness could limit how openly and consistently he expresses that affection.
It's likely that his affectionate moments would be more sporadic and intense rather than overtly tender or consistent, reflecting his complex personality.