He said he didn’t want a relationship but acted like we was in one?

Me (F25) and this guy (M23) started talking a month ago. He was trying to purse me - eventually got my number. He said he wanted to settle down. We went out on dates, sent me money when needed, fell asleep on the phone every single night , holding hands etc. Everything was great. Then I caught something - a party went on a few days ago that he went to. A source told me girls were all up in this face…even his ex. And that same day he was talking to her in front of me. I could see where this was drama headed. I confronted him, saying we could no longer talk because he was unresolved issues because of what I heard and seen. I asked what he was looking for, and said ‘nothing serious, just wanted to chill to see where we stood’ which confused me because the things we were doing/ saying was giving relationship. Anyways he asked if we could be friends after all this. (Ofc I said no) Was I in the wrong for assuming?
He said he didn’t want a relationship but acted like we was in one?
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