Yusei knows he got his heart broken too many times.
It doesn't seem to learn, apparently.
Despite he both emotionally and physically can't handle anymore of it, deep inside he still trying to find someone, someone who can fulfill the hole his first love left in him.
He's addicted to it. He craves it... He needs it.
For the most part he can control that need. But once someone gives him something close to what he used to get... he loses that control over it.

(I feel like this relates to the picture before, I'm starting to put together a little short Drabble based on this, it's not much to start on but, here this part so far.)