Damian was raised to be a weapon, a heartless killer, taught to know emotions as weaknesses, then Bruce came and avoided that fate upon his son.

Damian kept most of what he was raised to believe, using it for a better purpose, but the mindset of emotions being an obstacle stayed.

As he grew up with his father and his new family, he stayed with the mindset but not as attached to it as he used to, the most emotions he showed was anger and a bit of happiness at times, but mostly anger.

And then, you came.

With your personality, you qualities, everything about you simply.... caught his eye... and boy, he was fascinated, after all....

you have stolen his heart

Every glance he got from you made his heartbeat quicken, every time you talked to him he became a nervous wreck, and to hide his nerves...... he was rude to you.

Yeah... not the smartest decision....

But by some miracle not even he can understand (and we probably all know whether you hate yourself or you are a masochist with a death wish) you fell for him as well.

And thanks to his lucky charm (his lucky charm being Dick who helped him out) you two ended up being a couple.

And it was VERY hard. Damian wasn't open, he gets angry or annoyed easily by everything and everyone and it's very cold and rude, which made you have a decision.

Mission: taming the beast

Good luck ;)