Gf and parents

Am I in the wrong? (Im 17m) I talk about my gf very lightly to my parents, and don’t share that much, even though we’ve been together for 7ish months. Well this morning my mom asked how do I pronounce her last name? Mind you I’ve never told them her last name. I thought this was incredibly creepy, and think it’s incredibly invasive that they (in my opinion stalk, or look) at her insta which is very wrong. I think it’s weird they want know her last name too. My mom then tried justify it, she got in a fight with my dad, and then they said they found out where she lives with my Life360 by purposely looking and seeing it.. Am I in the wrong, I think this is incredibly creepy and incredibly wrong, if they want know something they should ask me, and it’s my right to say or not say.