My girlfriend of 6months (25F)just told me she has 3 kids im a (21M) How do i process this?

Got into a situation i never expected and i dont know what to do

Hey i am a 21 year old male and my girlfriend of six months just told that she has 3 kids i was unaware thats she had these kids. She told me that she was scared to reveal them because she didn’t know how to / didn’t know how i was going to react. Im really stuck because i really love this girl and she has all the qualities i would want in my wife but rn i just dont know if im ready to be with someone with 3 kids. She told me about 1 and i accepted it then told me about the other 2 and i kind of just shut down. She also has an extensive support system with the kids and their families. Really looking forward to any opinions on how i should proceed because i really dont want to lose her. At the moment i know that she was untruthful but the feelings we have for eachother was real and it probably has been the best 6 months of my life