Was I wrong to laugh at him and congratulating his opponent? should i apologize to him and continue our relationship?
To laugh at him and congratulate his opponent was unkind on your part. To strike you was much much worse on his part. No excuse for violence. However you could maybe think about how you behaved (and maybe grow up a bit?). It wasn't very nice. If someone humiliated me like you did, that would be the end of the relationship. Period. Not just because of what you did
, but also because it revealed something unpleasant about what you are
. Unthinking, and valuing male dominance, the kind of gal who chases the alpha. Likewise what he did to you (and why) revealed something about what he is. Apologise maybe, but don't try to "continue" your relationship. You are wrong and toxic for each other.