Bf making me feel super insecure

So I have B cup sized breasts and I usually wear a structured bra with a bit of padding when I go out. I’ve always have done that because my body looks so much better in shirts like that. Is that weird to wear a padded bra? I never thought it was but my bf is making me question it.

Today I wore a non structured extremely minimally padded strapless bra because it was super hot outside and my boyfriend randomly stared at my boobs and said in a rude tone “when you wear a normal bra it looks so different” We’ve been together for 3 years and I never wear a bra at all when we are chilling at our place. He’s seen me naked a million times. Like why even say that? I’m like what? And he wouldn’t answer me and just kept watching tv. The reason this makes me feel so insecure is because first of all I’ve always have been insecure with my boob size. And second he never takes my shirt off when having sex. He only focuses on my thick ass or thighs. And the porn he watches is with girls with huge boobs. He never makes me feel good about mine.

He’s always been a bit insecure himself and by that I mean he’s had a problem in the past with me when on occasions I’d wear a full face of makeup or wearing tight low cut shirts. He’s stopped saying anything about that because I had a talk with him like a year ago when he was getting out of hand with his negative comments towards me about it. And I know this was just another jab at me because I wear padded/push up bras.

Like should I not wear padded bras? Is it slutty? I never thought of it like that but he certainly makes me feel that way. What do you think?