What To Do When The Girl You Love Is In Love With Another Man

There’s this girl in my department, same level. We’re very good friends who flirt a lot and equally share the same dreams.

In fact, most of the activities we’ve carried out in school were all her ideas. She’s just all over me and attached herself so much in my future. She sometimes jokingly says she wants to marry me. People recommended that we are going to make a good couple. So, I then thought of all of these and how compatible we are, I then took the bold step to ask her out. She only responded that she has a boyfriend and we should drop the dating discussion for now since we’re still best of friends and we have
enough time to talk about it. I dropped it. After sometimes, she started complaining that she doesn’t like my being strange. I told her I loved her so much, she replied via chat “I understand but I love my boyfriend, he’s the best part of me”.

Please help me with what to do. I love her and I want to marry her. She knows but the only challenge now is her boyfriend.

What should I do?