Best friend? This will only go two ways.
The relationship will be a dumpster fire
This will go completely fine with a lot flaws
If it is your best friend you are getting with, it is such a flip of the coin, a 50/50, on whether or not it will go well. There is no need to worry about the 1st option. As long as you do everything correctly you will be fine.
Do not take away your friend liberties. If you are the best friend of someone and you want to be with them, do not limit them to what they do when you were just friends.
Do not talk about the cliche of "but we are friends I didn't know you liked me like that." It doesn't work out 65% of the time. Don't ask me how I got that percentage I have a lot of friends and other people I know who did the same thing. However it is different for each person.
At this point of the relationship you are friends with benefits. Go wild! If both of you are into that of course.
Also are you male or female and is your best friend male or female? This is just so I know what I am saying. I just need the information. I don't know much here
