I caught my dad staring at my boobs yesterday...

... and I didn't mind it. Yesterday I went to my parent's house for dinner, and my top was kinda low cut. Multiple times I caught my dad peeking at my cleavage. Although have a great relationship with my dad, I've never been sexually attracted to him or been into incest or anything like that, but I was strangely ok with it? Even after this, I don't feel a sexual desire towards him, but Like for some reason I was fine with him looking lol.