People whom we are close with and love yet not passionately are meant to be our friends while we became lovers when we come to show and the feeling for passion with the opposite sex, since both of the two people are similar they do have the same feeling and they can commit to love each other but then we cannot be a lover of others when we are committed with this said our love one. Because of Similarity and physical attraction we've coming into socializing with others. Similarity is much happening between friends, like for example they are similar on what they do, like they have the same taste when it comes to dressings and interiors, you both like basketball rather than volleyball, and more.
Similarity between others you is widely spread out to all friendships, that's the reason why your friends because you both can understand each other. When it comes to a deeper feeling of affection to the opposite sex will mean of a passionate love.
Companionate love is what we felt for our friends as our company ion. We don't give special feelings for them like what we give to a person which we like most, not just a friend but more than a friend. Companionate love is different to passionate love.