Older man

Hello, I’m 20 years old and I am currently talking to a 45 year old man online. I’m starting to really like him a lot. However I’m worried about the long term situation of dating a guy who is 25 years older than me. Should I end things now before it gets any further or continue to see what happens. We arent even dating yet but I don’t want to get hurt in the future so idk if I should keep talking to him. If we do end up dating what would I tell my parents? They definitely wouldnt approve. Edit: we started talking before he knew my age so he was not purposefully looking for younger women.