Any ideas?

Lol, I'm not very good with names. What have you on the plot thus far?

Okay your picture of the characters look Angelic and Demonic so I was thinking:
Guy name:
Andras - demon of quarrels
Alastar - cruel demon
Agares - demon of courage
Gadreel - fallen angel
Solas - fallen angel who appears as a raven
Vetis - the tempter of the holy

Girl name:
Ananchel or "Ana" - Angel of Grace
Ambriel - Angel of communication
Amitiel - Angel of truth
Paschar - Angel of Vision
Camael - Angel of joy
Hael - Angel of Kindness

Hope these helped you get some ideas :) If you need more normal names I can look those up too!

The key to discovering your story's plot is asking questions. Why does he love her? Why does she love him? Was it love at first sight or did it take some time of knowing each other? Was someone rescued physically? Was someone rescued emotionally? What is keeping them apart? What is holding them together? Who or what are they fighting against and why? Are they on the same side? Is their love condoned or does it bring dismay to their peers and families? What are they fighting(striving) for? What will obtaining it(or preventing your villain from obtaining it) do for them? What does that conflict or lack thereof mean for the couple? Is this a tragedy(ends in death) or a comedy(ends in marriage)?

Ooh. Angels and demons. This ought to be interesting. Alright, here it goes. I'm not too sure how they're gonna meet, but I'll give some names and a plot that involves forbidden love. Arthanax is the heir to the throne of The Underworld( Hell) and he falls in love with the future queen of Heaven; Assyrah. They find a way to be together but soon run into issues because of their differences; in other words, they get found out. Both of them want peace between their kingdoms and they desperately want to be together.