I really am not a BL watcher. I don't know, I've just never been drawn or inclined to watch them. But everyone has been telling me that they can be really good and romantic. So I tried my first one a couple days ago, and I actually really enjoyed it. 

The BL I watched was Love in The Air. I quite liked this one, so if there any BLs that are similar to this one, let me know. I really liked the aspect of Sky and how he was abused in his past relationship and how he got comforted and loved. Especially because Prapai was a playboy and he changed for him. So if their is a plot line similar to this, please recommend some, I'd be happy to try them out.

The only BL I've seen with a playboy who ends up with the other ML is Theory of Love.

Bokura no Shokutaku has a ML with a traumatic past being comforted and loved (with found family and bonus cute kid!) 

Some of these might be to your taste:

I'd recommend Long time no see . ML got traumatized in his youth and got on the wrong path with an rough upbringing. In meeting his other half, he can heal.