Relationships are something very private and no one shoul interfere. Decisions about who do you love or not are yours based on what your heart tells to you. Sometimes we fail choosing our partner though, it can happen. The thing is to wonder if we really love that person or if it's just infatuation.
Be sincere with yourself and take your own choices since those will determine your path in life. Take your time, you don't need to rush, analize yourself and your feelings and thoughts, the answer will come.
Hope it helps, cheers.