Ladies advice

So I’ve been talking to someone from work since the summer. I knew talking to this person would probably be complicated, but in my mind I was like “ only one way to find out”, so I decided to still give things a shot and see where things go. We hang out in his place. YouTubed videos we both liked, made drinks, it was a cool chill night. We didn’t have sex or anything. The next day I see him at work and we’re both trying to pretend like I didn’t just come from his place. He invites me over again, and same thing happens - we drink, we chill and talk... days go by and eventually we have sex & I been basically staying over since the first night we hung out, He has no problem with me staying, he’s actually the one who wants me to stay with him at his house. Now the thing is...

I caught feelings, of course after spending so much time with this person. I realized I really liked this person because of XY&Z. Now I confessed my feelings to him, and he told me he has feelings too but he wasn’t really looking for a relationship because of his past relationships and his trust issues. I respected that & just left things there as it was before.

Now, days go by, holidays go by and I’m still here with him. One night, we got soooo drunk and I passed out on the couch and he went to sleep on his bed. I wake up at 5am confused as fuck on wtf just happened. I looked over my shoulder and I see him sleeping and then I look next to me and see his phone there! Now I know I should never go through anyone’s phone but, I had to know, I felt like I was being lied to. Like there was something more going on with his outside life that I don’t really know about. Turns out he was texting 3 other girls!!

1st girl-happened to be a another coworker who has a bf!!! (They had a thing too fyi)

2nd girl- he’s planning this entire vacation to PR for her birthday!! they’re texting back and fourth for days! “ happy New Years boo” the girl just casually invites herself over saying let’s chill in his place. And she’s realizing he’s not really responding or engaging in the text because Hes with me!! But little does she know. So she eventually says “ if you don’t want to come then don’t “ and he’s like you know I would never do that to you yada yada.. I look at their conversation history. They have a pic together all lovey dovey on the train. & then there’s a picture of her ass! And I know it’s hers because one that’s her skin color 2! The background was a green wall. On her ig pics her bedroom is green.

3rd girl- he seem to really want to see this girl. He keeps saying come over, let me see you. I want to see you. She keeps saying no because she looks ugly and doesn’t want to be seen that way. He goes and says IDC what you look like, we’re way past that.

I immediately pack my things at 5am and head to my car. I realized once I got in my car I forgot my wallet and my work phone. So I went back to get it. Now he’s up and is like wtf is going on, and I let it all out and just wanted to leave after that. He wasn’t letting me go, he explains himself and says these girls are all friends! And how I’m reading the messages wrong!! Like I’m not fucking stupid.

Now there’s a lot more going on but I just need help understanding some things.

-How can this person “like me” & Want to still hang out with me, but doesn’t want to be with me or really want me talking to other people.