<human>: Can you provide a brief rundown of the text in within 3 sentences?

Me 23f, him 24m

I've been seeing this guy for about a month. When we first met we got along very well. We slowly got to know each other and it escalated into us turning into cuddle buddies, and eventually FWB. 

I've never met anybody that can make me laugh so hard and so often, and I think he feels the same (considering we are constantly making each other laugh and smile). When we go out in public our attitudes are generally on a friendship level, but once things hit the bedroom, we are all over each other. 

Lately he's been asking me where I see us going, hinting that he'd like a relationship. Well, I feel shallow as hell, but the only way I'd consider it is if he'd lose some weight. He's by no means obese, but he's a bigger guy for sure. He's 6'5" and about 320-330 lbs. I love his personality and I feel like he'll treat me very well and be a great partner, but I just can't get past the weight, if we're going to get into a relationship. 

Well, my question is this: should I be straightforward about my expectations? Or should I just turn him down and not tell him the real reason to spare his feelings? 

I've been asking myself why I feel this way, and I think I've come to the conclusion that I care about what other people think. I'm pretty attractive and skinny, and I'd like to at least look like I have standards, physically. Am I shallow? Do I not deserve him? Any advice or honesty appreciated
<bot>: attracted to overweight guy, but will only give the relationship thing a try if he loses weight. Not sure if it is worth telling him that.