I'm not good at coming up with titles either. I'm a painter and never name my paintings. It's just weird to me.
So instead of throwing out some title ideas one way of finding a good title as the author is the think about what the overall theme of your story is and how you want your audience to feel about it. One of my favorite book titles is, "Great Expectations" by Charles Dickens
I hope that helps, now here are my not so good ideas.
For The Love of Justice
Justice For Love
Bloodlust? (A bit vampires+ish
Cherish Fighters? ( This is horrible I'm sorry)
If you believe that your characters will come off really interesting then name them after them kinda like Bonnie and Clyde.
I hope that helps I'm not a romance writer, I'm a psychological thriller writer.
(If my grammar is off, I'm typing on my phone without my glasses...sorry)