Fiancé watching porn & then lied..

So this morning my fiancé was in the bathroom for about 30 minutes and when I went to use his phone to make a call after he had been in the bathroom, his incognito tab was up. So I automatically assumed he was watching porn. Which would be ok since we live with my parents and my parents and siblings were awake and could walk in my room anytime if we were to be doing anything. But then... he lied about it. He made up this big mumbo jumbo on what he was doing on his incognito and said I was “making a big deal over nothing”. Well... I decided finally to message him and tell him to stop lying that I knew he had been watching porn because I saw it pulled up on his phone. (Which was a lie!) And he messaged back saying “I thought it would make you mad. I’m sorry” Yall.... when I say I blew up... I BLEW UP. I’m still mad and it’s still going to take time for me to trust him again. We’ve been engaged a week today and my heart and feelings are just hurt.

Just had to get this out.