An Engagement without Dating with My Scion Childhood Friend: A Lovey-Dovey Life Even with a Contract Marriage!?

Story :  "You just need to feel good." I used to live a life with no restrictions as the daughter of the company president. When I lost both of my parents, my fiance, Souta, left me. We were engaged, but without the company, he had no more use for me. Despite that, his brother, Iori, took me in. He hated his brother and apparently wanted to get revenge by making me happy. I accepted his proposal and signed a marriage contract with him. Even though I didn't expect them, he bought me clothes, went on dates, and introduced me to people in his company. I couldn't help but feel very happy. I know he says that by being happy will get our revenge, but Iori has provided me such a luxurious life. When we have sex, he's so gentle since I'm still not used to it. He uses his fingers and tongue to make me feel all sorts of pleasure. I'm happy, but is it really okay for me to continue like this...!?