Why is he like this 😩

So I met a guy last Friday through a mutual friend at a get together at my friend’s house. My friend was obviously setting me up with his friend, though I didn’t know it at the time. I’m just gonna say right here that I’m 20 years old, a virgin, and I don’t plan on losing it anytime soon for personal reasons. Anyway, me and this guy (22) really hit it off and I told him later that night when we were messing around that I was fine with “messing around” but that I’m not gonna sleep with him. He seemed chill about it, didn’t really have an opinion. I was relieved that he wasn’t going to pressure me about this, as it’s something that I’ve experienced in the past. However, that changed on Sunday. He kept telling me that having sex would bring us closer and I reiterated that it’s something I’m just not comfortable with. I don’t guess I expect him to completely understand but I’m afraid he’s gonna keep asking me about it or asking if he should bring over condoms. I’m not going to do something I’m uncomfortable with with someone I’ve only known for a few days. It sounds like he’s only going to stay interested in me if I sleep with him...he threw out the “I really like you a lot” line, and now I’m questioning whether or not he actually does like me or if he’s just hoping to get laid. I guess my question to you ladies is is there something I’m not doing in communication my feelings to him? Please feel free to drop your own opinions or experience...feeling kinda disappointed because I thought he might be different.