How should I tell him?

Hey! I just posted the poll about being tested positive for gonorrhea. Almsor everyone has voted for me to tell him. How can I tell him without making things awkward? We're both adults, I'm not a teenager. I just feel like this is an awkward conversation as is, especially because I've ended things with him. I agree, he has a right to know. Any advice on how I would go about telling him? I still have his number so I can get in contact with him. Thank you! And again please no rude comments.