Recently my partner (26M) saw that I (26F) sent a picture to someone showing a lot of boob..

I was out with the girls, my partner had picked my outfit, he sent me out in a lingerie top that barley covered my nipples. I put a photo of me and my friend on my Sc story, to which a guy replied commenting on my boobs.. I was a bit drunk so I couldn't resist sending him a photo back to tease him, nothing more revealing, but clearly just a close up of my boobs popping out of the top

Later that night my partner picked me up and saw me messaging someone but hiding it.. not very well it seems. He didn't say anything but when I went to sleep he looked at the messages, the next morning he acted like nothing happened. Until he started questioning me about it, I even tried denying it at first but he laughed and said he had seen it. He then started kissing me and touching me, all while telling me how naughty I've been.. we then had some of the best sex of our lives and it opened up a whole new world of fun for us