Is this wrong/bad? I'm only trying to help..?

OK so i lost about 95lbs in the past year and am very healthy. i always think about what/how i eat and when and i work out almost everyday. i've always been sort of an intense person. when i decide i want something, i totally give myself over to it (my friends use the words "mind, body, soul" to describe my tendencies with commitments and things of that nature). basically if i put my mind to something, i really put my mind to it. and now my mind is on my weight. i have a friend who wants to lose weight as well and he says he wants my help but he's not willing to put in the work. i keep telling him to make small changes but he's just not willing! like today i physically had to pull him away from the escalator by his sweater and make him take the stairs! and then i just could not convince him to skip dessert at lunch. he keeps making excuses. says he "just started" (his weight loss journey) but quite honestly i don't really see the beginning of anything significant. i feel like i'm badgering him because i'm trying to get him to be more conscious of what he puts in his body. his approach to weight loss is just so juvenile! he's going to work out with me and he asked "if i do this, will i lose weight?". i said "definitely". and he got all happy and was like "so i can eat whatever i want??!!" and of course the answer to that was a big fat NO!! it just really annoyed me. and i don't know why it's getting to me but i really just want to help him change. so today i sat there and i broke down his lunch for him (calories, fats, etc.). i was trying to get him to see what he was taking in in terms of food value and not taste or the physical amount but he just kept making excuses and at one point i started feeling like a bully. like i was kicking a puppy. and i don't think it's me. i'm perfectly polite about it but just very straightforward. like about the dessert i broke it down for him and then i said "u just ate a big lunch. u dont need that. thats extra calories u cant afford. think about it. why did u order it?" and he made his usual "i'm just starting out" excuse. he makes me feel like i'm too extreme and kind of nuts and i feel like he's being a lazy child. he says he's not gonna come work out with me tomorrow cuz he needs rest (rest from what?? everything he just ate totally replenished and then some!!) i'll end this now. u get the idea. what should i do? should i continue to try and help even if it makes me look/feel like a ***** or should i just let him go on the way he is? it's just ridiculous! he eats a chocolate chip muffin for breakfast, comes and works out with me, eats a giant lunch and then gets dessert and justifies that by saying that "he's just starting out"! and then he has the nerve to say that he's jealous of me and my progress when clearly he has no right to be! ugh!!! can anyone relate? any tips/advice/suggestions?