I FUCK my sister-in-law to make her happy with my stepbrother

I go to visit my stepbrother but I only find his wife, she invites me to come and drink a coffee, talking she tells me that she has had some situations with him that make their relationship not go well, so I propose to meet her and her needs as long as I continue to have my brother happy, She sucks cock and fucks deliciously, you could tell that she lacked to have a sexual encounter with a lot of desire, a long time ago I wanted to fuck her but out of respect I didn't, now that she let me do it, I totally took advantage of her body.