I'm new as well. Your boyfriend sounds a lot like mine - he is sooo skinny, and no matter what he does, he can't put any on, despite wanting to xD We're like one of those funny couples in a children's book, Mr Thin and Mrs Round, lol
Well done with your calorie counting and exercise!
That's a great start
You can do it! 
Good luck to you and remember we're here anytime you need us!!!