I'll just get right into this.... my dad and I have always had a kind of weirdly close sexual relationships? Like nothing has every happened but he often comments on things I wear or a while ago he heard me masterbsting with toys in my room and knocked and laughingly shouted "get a real bf and not those rubber things". I'm in my 20s and like I said nothing has ever happened bur I was so curious about him so one time I bought a new Sim and sent him pics of me then sent a follow up saying oops wrong number or something and apologized.... i was in the same room as him and wanted to see how he would react.. he didn't respond to me at all but he stared at his phone for like 10 mins and crossed his legs.. I saw him pinch and zoom into my pics too.. he then went out to mum in the kitchen and started kissing her or whatever and then they went upstairs to fuck (you can always hear there bed) and I got so excited/turned on knowing he was likely thinking about me in those pics pics while fucking her.... is there something fucked up about me? Or have any fathers had this happen before or wished it would happen?

For reference he is my bio dad and raised me and the pics I sent him had no face and I made sure you couldn't tell they were taken in our house