He watches porn...

Briahna
My fiance and I are 6 months from getting married and there is Soo much porn on his phone! At first I only noticed it when I would be on my period or if I was too sore to have sex with him but now I'm noticing it everyday! He will get up at tell me he has to poop but spend 30 minutes in there watching porn. Last night when I was super horny and trying to seduce him he told me to stop because his Dick was too sore... How do I approach talking about this with him? How do I let him know I don't like it and it makes me insecure?