Gymnast girl vs body builder man fight

hey im mike, im 23 years old. i go to gym almost daily so i have very big muscles.
yesterday i had a wierd bet with a girl from the gym, she is 16, she is very tall, and beautifull.
she practices gymnastics (flips, acrobatics etc), we were talking about fighting and kinda argued about who will win a fight between us.
i told her she has no change and flexed my muscles, but i dont know how she was so confident and she simply told me like "pretty muscles, but do you really think youll be able to use them against a gymnast agile girl?"
.
and we decided to fight, we made 5 matches (fights), i dont know how its possible, but she killed me in all the matches! she was *extremely* fast and agile and i literaly couldnt land almost a single punch on her. she dodged like a fly.
she finished the 4 first matches usiing locks and chocked on me and i couldnt escape so i gave up, and after the last match she stood near me and waited me to stand up for the next fight but i gave up completely cuz i was sore and it was painfull.
and then she just stood there in her triumph pose like a model and told me "i told you, woman's speed is better then man's streanght"
.
after she told me that i tried to get up, but she stomped my abs muscles and didnt let me move from the floor for about 20 seconds with her leg.
after she was done she simply walked away like a model and all the men in the gym moved aside, even man who domartial arts.
do you think i need to apologize? or her? is it embaressing or not?