I like to write two types of romantic love-
The first is what I try and have in my own relationship, a good, mundane love. It's really refreshing to see fictional couples who are mature, honest, and communicate well, who trust each other enough not to get jealous and talk when it over patiently when they feel frustrated, who have to talk about who washes the dishes and how to organize finances. And just showing how fun love is, not the passionate starry eyed side, but the friendship. I love characters who are nervous because they both want it to work so much, steamy scenes that get interrupted because somebody elbows the other in the face, little, human moments.
On the other hand, I love unhealthy disaster love. I love watching two characters who are still at the beginning of their emotional growth trying to care about each other and falling for each other like two confused rooombas. I've always liked high stakes stories and horror because I like to see humans at their most intense, and I think it's really interesting to see our flaws and struggles reflected and magnified in fiction. I mean less "oooh we love each other but we're so bad for each other and keeping making out instead" and more.... two characters who don't know how to love properly, but in different ways, trying their best to love and both ending up confused. It can lead to tragedy, but it can also be a really beautiful love where they slowly learn to understand each other let go of unhealthy parts of themselves.
And you can have a bit of each. No relationship is perfect. Even in the best relationships, we have to face our flaws. Even a messy start can make something stable and sweet.