Am the asshole for leaving my girlfriend in my apartment alone?

Anonymous
So my roommate and I both work first shift. We both usually leave around 5AM at the same time. Well last night my girlfriend spent the night and I usually drop her off at her house on my way to work but this time she drove herself because she also had to leave early in the morning for drill. She left at 6AM so she was in my apartment alone for roughly an hour only. When I got home the front door was locked and everything was as I left it in the morning. Well my roommate gets home and asked me if I left her in the apartment alone this morning. I said yes but because she was leaving early too. He said that he doesn’t want me to leave her alone anymore because he doesn’t feel comfortable leaving someone who doesn’t live there unattended. My girlfriend and I have been together for 5 years and my roommate has known her since the very beginning. She never did anything to get that reaction out of him before. Like steal or leave a mess. She doesn’t come over all the time so it’s not like she’s mooching off us. Am I in the wrong for leaving her alone?
P. s. my roommate also had a problem with her taking a showers there once and it started an argument because she doesn’t pay bills there even though she only showered there twice ever
Am the asshole for leaving my girlfriend in my apartment alone?
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