is it HIS responsibility to make YOU happy? If you have slightest idea like that, YOU scare everyone away.

If you really like him and try to make whatever you share enjoyable for you both and truly enjoy it yourself. He can feel it and be drawn to you.

Be his source of happiness, and he will try all he could to make you happier. To do that, you need to find your own source of happiness, things you really enjoy, good music, kids...