I like your style man. I liked pussyometer a lot. I just disagree. We can be friends.
I feel the issue here is the woman is feeling like there is something wrong with her for weighing 150lbs. Lots of women look great at that weight. You don't know she needs to lose 15 lbs. Sure, he needs to get off. Maybe she can do some things too. You're right. How much work is he putting in to do it? It seems pretty one sided to me. If he had an issue with porn, which some do, maybe that isn't the best idea.
Of course we can be friends.
I can certainly appreciate when someone knows I am not attacking them personally, and just pointing out what I feel is true. I'm one person, with one opinion. Up to the OP to decide which is true to her.
One thing we can agree on is that 150lbs can actually look good. I did point out the girl who goes to my gym. It just depends on how that weight is carried. The taller, the better. But reading the OP, we don't need to know how tall she is, we only need know that she is bigger than what her BF prefers. It's not a doom sentence though, especially considering that he finds her to be beautiful, which really goes a long way. BTW, losing 10-15lbs is actually quite easy. Try gaining 10-15lbs of pure muscle, which will make ANYONE look good.
If he has a true addiction to porn (quite rare actually), then yes, no good. But he has been out of a relationship for a long time. He's not used to getting laid, and she's attractive, just not the pornstar that he has accustomed himself to. That's the only issue. There is nothing wrong with either of them, they just need to communicate and figure out how to line up.
It is one-sided, but you're seeing it from the opposite side of the coin. We don't know the OP, so we have to go by what she says. She said he gave up the porn, but filled us in with very little of what she is doing on her part. Even though we know he hasn't truly given it up, the likelihood that the frequency has been reduced is pretty high. So he IS putting in an effort. But since I feel I am similar to her BF, I am telling it like it is:
Buy a black dress two sizes smaller than you, and work to get your ass in it. I GUARANTEE your man will plow the fucking shit out of you. Gods strike me down if I am not telling the truth.