Fiancé Stress

So my fiancé proposed on our 4 and a half years! Everything is going good with us, we just bought a house and he did it in our living room it was a surprise. I was not happy or excited like I should have been I really had no emotion , I had to fake being happy… I love him with everything in me and I couldn’t wait for that day to come but it’s here and I just wasn’t happy like I should have been… we have been through so so much, he has hurt me so much In the past and I wasn’t the best girlfriend either but I never did him like he did me , after all the lies and me finding out more and more even though he told me he was done turns out he had a addiction to porn , and talking to naked girls on onlyfans etc… I believe that he is trying but is that why I’m not happy because I don’t trust him or ?? We both are working on getting past our problems but it’s so hard to not think he will go back to it… Please give me some advice on what you think..my anxiety has been terrible thinking what he has done so I take my ring off so it don’t ruin it..