I need some relationship advice, here are some messages I sent to my best friend, based on that please help me.

So this is about NAME_1 and me ig. He seems to be really into me but I don't feel the same, at least not anywhere as much I guess. A couple days ago he asked me to be his girlfriend and I said yes because I kinda felt like I had to. I really don't feel ready for a relationship, definitely not with him at the moment ig. He inserts himself a lot for example when I'm talking with you in the server, he wants to hang out irl a lot and even though I don't have the money, time or social energy to, I feel obliged to. He has only been nice to me but he's just clingy and takes things too fast and I just can't get myself to back out or now break up or something because he's just only been nice to me, I don't want to hurt him and he seems really into me and everything. I feel like I'd be ruining his life or something. It's not that I don't like him, it's just that I don't like him for a relationship. Like, sure, cuddling and stuff was nice but the more time goes by the more I feel like I don't want to be in a (semi-)permanent relationship with him. Provide response in all capital letters, no lowercase letters allowed.
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