I am really affected by my brother's claims

I was eating my dinner and then my younger brother said he saw the way I way looked at this girl on TV programme, but he did not say anything because mum would tell him off. He said porn makes you look at girls lustfully, that I will look at a girl on TV and then look her up on Google on my phone and that people would think I am strange if I did that in the real world. He noticed I was upset, and he said to my sister “See, now he is upset. You cannot say anything…”. This was very dismissive of my feelings. His comments really affected me, triggering a memory of when he said this to me before, bringing my evening down, making me feel perverted, little, emotionally vulnerable, causing me to lose confidence in myself and to no longer feel interested in making female friends like I planned. The comments also made me feel really self-conscious about looking on the TV, when they are girls. I only think I am smiling when I am looking at a girl, I find attractive. I do not think I am looking at them lustfully. I just feel he wants to keep holding my past porn use against me when I do not view it now. Whilst I was feeling down, I was feeling like people were around me trying to calm me down and criticising my behaviour, making me feel I am bad for feeling how I am feeling. I was feeling beneath my brother, at the thought of him saying comments that upset me at home, but showing a different side when around girls and his friends.