<human>: So my best friend, let's call her Holly. We go to the same university and she's been with her boyfriend since the end of March. Ever since before they even were a couple I haven't ever really taken to liking him. He's in a frat and he had a girlfriend in high school who, from the looks of it, thought he was gonna be with for a long time.

Him and Holly have a very high school-esque relationship now. It's hard for me to take them seriously and I can't believe that he brought up engagement so soon. I know that me and my boyfriend [22] have mentioned it before but never too seriously, since things can change.

Holly says she plans on them being together 6 or 7 years down the road. I'm not saying it's impossible, but I'm worried about her and wonder how things are going to be between them months later. She's taking it so seriously and I want to talk to her about it but I don't want to seem like a bitch or that I want them to break up.

Take into account that my university is a very sexually fueled one, based majorly around hookup culture, and with him being in a frat I worry. She's a hopeless romantic and I don't know if he's just feeding her what she wants to hear. I am not around him enough to know his personality type, the last time I was around him, I was with my boyfriend who later said he didn't like him either.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: best friend told me about possible engagement with her boyfriend who I am iffy on, she's head over heels and I don't want her to be in over her head.