Should i talk to him about it?

so, my boyfriend of 5 months now, waches porn. and ive always known this, he doesnt often, but he still does it. i watch porn too. i never really thought anything of it. but one day, i saw his porn accidently on his phone, and it was a blonde naked girl with big boobs. ( and i do NOT look like this at all.) i didnt say anything at the time, but later i brought it up in a good manner and he admited yeah, it was his porn, and we left it a that. but now it's been bugging me...and i dont rly want him doing that anymore. something about him fantizing about another girl like that drives me crazy! i feel like i should look better and look more like that girl, since that obv. what he likes. should i talk to him about it? or am i just being crazy?