Hijikata- san is Mine!!!

Okita Sogo hates Hijikata Toshiro. He hates Hijikata san with all his heart. But when he sees Gintoki make moves on Hijikata, he can't help but feel bitter pangs. Is this jealousy? or simply obsession towards the object of Okita's hatred. There's no way Okita would fall in love with that bastard right? There's no way he could have feelings for Hijikata right? Or is there ??