Why would my friend lie about a guy hitting on her?

So my friend was recently telling me about a guy who’s really attractive, had always had a crush on her. So when I was with her she said she’d followed him on Instagram and he’s followed her back. I was so happy for her because she’s liked this guy for ages. She said he would probably slide into her dms.

But I just found out she’d been lying to me about the whole thing, he never hit on her the other day and she didn’t even follow him! It’s small but I don’t get why she would feel the need to lie to me all this time?
Why would my friend lie about a guy hitting on her?
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