Is AUTHOR wrong in the post ? POST : Throwaway because her boyfriend knows my main account.

I'm a medical student and last year got grouped with this amazing girl. Being in a group with her, we spend most of every day together (same lectures, same classes, same lab times at.). She is amazing and we get along really well, we also study together, hang out from time to time and go out for parties from time to time. I can picture the two of us really well together, both medical students, same interests, we can support each other etc. She also told me a few times she thinks I'm really funny, so she definetly does like me too.
The only problem is her boyfriend: I have met him, he is an engineering student, and while he was really nice to me and we chatted for quite a bit, it became clear that he is no intellectual fit for her. Don't get me wrong, Engineering is great and everything, but compared to medicine, I really can't see a relationship working between the two of them. She does not think the same though, constantly talking about how much she loves him, they even moved in together and plan a future together. As stupid as it might sound, but I think I know better than her and know that she would be happier with me in the end, both of us working in the same field, on a similar intellectual level. 
I have really tried to casually slip it in the conversation, making suggestions, etc. Her boyfriend is currently studying abroad, so I really see my window now. 
Yesterday though, I told a friend of mine about this, and he was shocked, telling me I'm trying to ruin their perfect relationship and no good will come from this, telling me I'm a huge awhile for trying this, but I know it's the best for both of us. 
So, what do you think?