Parents

Tilley
So I know I've posted about this a lot, but I'm getting more scared. My dad doesn't know I'm dating someone. I still live at home for right now, saving money until I can move in with my SO. I'm 18, he's 37. His parents know. His dad loves me, his mom hasn't met me yet. She knows about me, and she says things about me being closer in age to his middle school cousin being closer to my age than his. I don't know whether she's joking or not, because I've only heard him tell me about it. It's really important to me that she likes me, but it shouldn't be. I'm thinking about telling my dad im going on a date one day and then telling him who it is and how old he is and acting like the months we've already been together didn't happen... is that bad? I'm terrified he's going to disown me. I feel like once he sees how happy I am, my SO can win him over (he did that with my friends. They're always telling me how cute we are and how happy they are thay I have him and how happy I look). Any opinions or ideas on this? Or personal stories... my dad is very important to me, it's always been me and him, and I don't want to lose him over him not thinking I made the right choice for my life and who I choose to spend it with. But he makes me a better person in every single way.