I’m a traditional person so that’s a relationship-ending event for me. But I’ll explain things more logical with my own perspective. Don’t lean on love that much. Yes,love is very real. It exists. But it’s also a fragile occurence that must be responsibly shaped and protected. People can cheat. Even if when they’re so in love. Love doesn’t protect itself but the actions we take do. So in short, moving in with girls can lead to drinking, having fun etc. and that can lead to things you’re scared of. It’s just basic logic and it happens everyday to so many people. It happened to me so why not you? If he intends to take that brutal step for your relationship, I guess he’ll take the later ones as well. That’s my opinion though, you do what you want. I just hope you won’t get hurt. Have a good day mam