Is this normal ?

Okay so I have a very close friend and she seems to like get super obsessed with guys easily. I am wondering if it’s a normal thing but here’s a little back story. She was texting this guy that she met on tinder and they stopped talking a few months ago, they never met in person or even talked on the phone. But she two months later talks about him for probably 5 hours straight when I’m with her. I try my best to listen and not get irritated but she also never seems to take my advice. I feel like it isn’t normal behavior. She talks about how she cries over him, and I truly feel like she is the one who pushed him away by sending him this really long message and he never replied. Yet she keeps talking about he’s the one for her and she keeps seeing signs that they belong together. He clearly doesn’t want a relationship with her and she isn’t seeing that.

She is in her early 20’s and has never really had a relationship. I really try to be a sounding board for her but it always seems like when I give her the straight facts she makes excuses and I don’t want to be mean. So I don’t know. Does this seem like normal behavior?