Does he like her????

I think they're not and maybe you're just being paranoid. Maybe they're just enjoying each other's company and nothing more. Aren't you happy that the 2 most important persons in your life are getting along well? As long as they're closeness stays just right that (a little hugging is still fine), you should not worry much. Just nurture your love for each other and trust each other, that should keep your relationship stronger. Good luck!