Well look at things this way

You learned a valuable lesson .. do not share email until a friendship shows good healthy growth over time. Keep talking to a person on what ever platform you found each other.

Honestly I only use my email for medical info or tracking an order or something. I doubt I’ve sent an email to anyone in 8-10 months or longer. I have Facebook friends and family and we just use messenger.

If your ideas or morals just don’t align with whoever you can simply stop talking to them. Send a message ...I’m sorry I think you and I have much different opinions /morals /views and would like to stop communicating , I wish you well in life. The end.

Feeling horrible ? Well don’t. We all need to take care of ourselves mentally and physically

Like what if you had a friend that drove crazy fast and dangerous when you get in the car ? You wouldn’t get back in the car with them. Why feel horrible ? You were protecting yourself. Same logic applies to your situation.

Good luck