GURL😫 HELP

So I am 18 and so is my boyfriend. We met at a fair and I was the one who asked him out. We went on a few dates but he travels for work. So I live in MN where we met. And we started dating and it’s gotten really serious but in a good way. He understands me and truly cares about my wellbeing and my overall everything and he’s the sweetest person I know. He quit his job to move back home to Ohio. Because I’m going to move there and we are going to be staying with his family till we get a place of our own witch is a good idea. My mom knows about him and likes him a lot. But I live with my dad right now and we have never really gotten close or along and he doesn’t know about my boyfriend and I feel like he wont understand.. I’m leaving in two weeks and I don’t know how to break the news. I’m scared too hurt him but I feel like if I have to keep holding things in or holding back on thing I’m going to hurt myself. Please help!

😫😫😫