Drayce was showing impatience as he moved to dominate her sweet mouth, showing through this kiss both his passion and concern, as if Seren would disappear from his arms if he were to loosen his hold on his wife for a bit.
Ever since he learned of her abduction, though he appeared calm on the surface, the truth was he had been anxious about losing her. He could not even let himself think of her being hurt. That scene where Aureus brought back to the Crystal Palace an unconscious Seren was such a shock to him he could not erase it in his head.
The pain of losing someone was something he was deeply familiar with. He had lost his mother, and with her gone, had also lost a loving father. He could not afford to lose another beloved.