Sejanus is the prince and his ma has pushing him to get a partner. The truth was that he had tried but nobody really wanted to be with him. One day when he bumped into you his breath got caught in his throat for a second. He thought you were the most beautiful person he's ever seen but he was worried about you not liking him back. He at least wanted to try to persue you even if it might not work out.

“Sorry about that I must not have been looking at what’s in front of me.” He said apologetically helping you up