Have I answered this thread yet? I don't think I did so... Slow burn adult romance all the way. I always very much loved the slow getting to know each other, being interested in one another and slowly connecting over time, the more I can appreciate the fully matured relationship because I witnessed the relationship really happen over time. That's how I do approach my own story as well.
Teenie love is a different genre for me lol First relationship, first kiss and so on. I might be a little bit old for this one now. Since teenie years I have read so many mangas where outta no where people were hooking up with no apparent reason and it really made me feel like a very rushed and shallow thing, but there is always going to be a fanbase for both of those