Moving out

Katie
I plan on telling my dad that I am moving out of the house. I am moving in with my boyfriends family. I will be working with them, and my car is under their insurance. Me and my boyfriend are working on a travel trailer and we will be living in that until we decide where we want to build a house. It just makes it so much easier for me to live with them until we get the trailer done. I don't know how to break it to my dad. My dad doesnt even stay at the house during week days. He works out of town. He doesn't approve of me moving in with my boyfriend, even though he likes him and we have been together for three years. I don't want to leave on a bad note. I turn 18 in 5 days. I have finished school. I just don't know how to break it to my dad that I am moving. Any advice?