Yes, when friendships are overlaid with a feeling of attraction, they can often blossom into something more than a platonic friendship. Many people have found love in a relationship that previously only consisted of a friendship, perhaps partly because they already know the other person well on a deeper level, and feel safe with them. Of course, the reverse may be so, too. Sometimes sexual partners only develop a more romantic relationship after they have got to know one another more fully and become friends. For some people, however, keeping platonic friendships and romantic or sexual relationship distinct is very important for success in maintaining them.