Best thing about your SO

So me and my friend were talking today and we randomly got on the subject about what we find the most thing attractive about our husbands. So I was wondering ladies what's the most attractive thing about your SO that you can't get enough of?? Other than my husbands butt lol and his arms I love his lips idk why maybe cause they are just so kissable I can't get enough of his kisses but that was one of the things that I thought was the sexiest thing ever with him