Seeing that you like him, it should be just unrequited love. Who is his friend? It seems that I can know who he is without your permission. Even if you have a hundred female friends with him, he has been having an affair. What can you do? If you just like his appearance and want something with him, then you can add it. Nobody says anything about you. And just a software friend, it doesn't mean anything. Do you think too much?