Not sustainable. Sbb i had a very close male friend, but after he got married I stop seeing him just out of respect to his wife, even when the wife really like me. I dont even contact him directly dah, i will contact him and his wife together, or just pass message through his wife. Bff ni biasanya org yg kita confide byk pasal perasaan, kehidupan etc. Once a man got married benda tu semua dah tak patut cerita kat org luar, benda tu semua kena buat dgn isteri lah. And vice versa.