How Do I start an apology letter. The best way to start.

Is this a formal letter, typed, or an informal, handwritten one?

Depends on what you are apologizing for?

Just saying sorry to a guy.. Wanting to send an email. Trying to figure out the first couple of sentences.Long story short I made this guy feel uncomfortable..

Uncomfortable about what?

"You know how much I value our friendship, so you can only imagine how sorry I am that..." or "I have no excuse. All I can say is that I'm sorry..."

Keep it short with a simple, honest apology.

https://www.askmehelpdesk.com/relationships/dont-get-598518.html

Is this the guy? If it is, you owe him no apology at all!

No no someone else

Well share the story, and get our opinions, and suggestions.