Aww, Sebastian is absolutely adorable and very, VERY handsome!!! I love his charming face and his mesmerizing eyes, too. My Eros also has heterochromia with the brighter, red eye on the same side as your Sebastian.
I can totally understand falling head over heals over him. He is just too precious and sounds like lots of fun.
I look forward to getting to know Sebastian and seeing more of him, too. Have fun with your cutie pie.