<human>: Hey all!

One of my best friends (19F) and I (19M) have known each other for about four years now. We are and have been very close for the majority of this time, and, over the past couple years, have had some romantic flings that ultimately sizzled out. We've spent time as FWB's, but never had a full-fledged relationship.

Recently, we decided to give things another shot. We talked it through, and realized that we were both the kind of person the other was looking for in a relationship, and decided to act on our feelings one more time. 

We're going to take things slowly so that we can ease into the change, though we've already had a fair deal of sex, so it's more about getting used to the idea of going from friends to BF/GF vs. the physical aspects.

Here's where you guys come in. We already know everything about each other, spend a lot of time together, have been intimate, etc., so I need some advice on how to best make this transition. We get along very well, have amazing sexual chemistry, and just enjoy being around each other. I'm just not quite sure how to make it feel more like a relationship vs. a close friendship. Tips?

Condense the text into a few key points
<bot>: Going from a very close friendship to a full-fledged relationship with one of my best friends. Need tips on how to successfully make the transition.