I don’t want to be with my girlfriend anymore and I don’t know how to kick her out of my house

My girlfriend and I have been together for a little over a year, living together for 5 months, we split rent. Everything was great until I started to lose feelings i really am not feeling it anymore and I don’t know how to tell her. She lives with me in an apartment that I own and she doesn’t doesn’t own any of the furniture or anything she doesn’t have a mattress in storage or anything I would feel bad telling her to leave with nothing. I could move in with my buddy and let her stay there until she finds a place. I just don’t know how to tell her it would crush her, what do I say and how like it would be such a surprise. I think she can I tell I’ve been a bit different lately but I’m not sure. Please help Edit: this is not because of someone else lol